Prediksi 1 Un IPA Fisika

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Prediksi 1 Un IPA Fisika - Quiz

Pilih salah satu jawaban yang menurut kamu benar dengan cara klik a, atau b, atau c atau d. Setiap jawaban benar akan diberi skor 10


Questions and Answers
  • 1. 

    Perhatikan tabel hasil pengukuran empat orang siswa terhadap besaran fisika sebagai berikut !   Siswa Besaran Nilai Pengukuran Satuan Alat Ukur A Panjang 20 cm Mistar B Kuat arus listrik 2 A Amperemeter C Suhu 32 K Hidrometer D Massa 15 kg Neraca sama lengan   Data dalam tabel tersebut yang benar dan berdasarkan satuan SI (Sistem Internasional) disajikan oleh siswa ….

    • A.

      C dan D

    • B.

      A dan C

    • C.

      A dan B

    • D.

      B dan D

    Correct Answer
    D. B dan D
    Explanation
    The correct answer is B and D. This is because the units for temperature (suhu) and mass (massa) are given in the correct SI units. The unit for temperature is Kelvin (K) and the unit for mass is kilogram (kg). Therefore, the data presented by student C and student D are in accordance with the SI system.

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  • 2. 

    Perhatikan tabel berikut ini !  No. Besaran Fisika Satuan Alat ukur 1 Panjang m Mistar 2 Kecepatan m / s Speedometer 3 Suhu kelvin Termometer 4 Massa Jenis kg / m³ Hidrometer Besaran pokok dan besaran turunan berturut-turut dan satuan dalam  Sistem Internasional (SI) dengan alat ukur yang benar ditunjukkan oleh ....

    • A.

      (1), (2) dan (3), (4)

    • B.

      (1), (3) dan (2), (4)

    • C.

      (3), (4) dan (1), (2)

    • D.

      (2), (4) dan (1), (3)

    Correct Answer
    B. (1), (3) dan (2), (4)
    Explanation
    The correct answer is (1), (3) dan (2), (4). This is because the table shows the correct pairing of physical quantities with their respective units and measuring instruments. The first pair, (1) Panjang with m (meter) and Mistar (ruler), represents a fundamental physical quantity and its unit of measurement. The third pair, (3) Suhu with kelvin and Termometer (thermometer), also represents a fundamental physical quantity and its unit of measurement. The second pair, (2) Kecepatan with m/s (meter per second) and Speedometer, represents a derived physical quantity and its unit of measurement. Lastly, the fourth pair, (4) Massa Jenis with kg/m^3 (kilogram per cubic meter) and Hidrometer (hydrometer), also represents a derived physical quantity and its unit of measurement.

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  • 3. 

    Kelompok  Gandi melakukan pengukuran massa jenis suatu benda seperti gambar berikut ini. Jika volume benda 80 mL, mssa jenis benda M adalah….Kg/m3

    • A.

      1/2

    • B.

      2

    • C.

      500

    • D.

      2000

    Correct Answer
    D. 2000
    Explanation
    The answer is 2000 because the question asks for the mass density of the object, which is measured in kg/m3. The given options are all in different units, so we need to convert the volume from mL to m3. Since 1 mL is equal to 0.001 m3, the volume of the object is 0.080 m3. To find the mass density, we divide the mass of the object by its volume. Since the question does not provide the mass, we cannot calculate the exact value. However, the only option in kg/m3 is 2000, so that is the correct answer.

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  • 4. 

    Berikut ini gambar bimetal terbuat dari logam A dan B. 

    • A.

      Koefisien muai panjang logam A lebih kecil dari logam B

    • B.

      Koefisien muai panjang logam B lebih kecil dari logam A

    • C.

      Bimetal akan melengkung ke arah logam B bila didinginkan.

    • D.

      Koefisien muai volume logam B lebih kecil dari logam A

    Correct Answer
    B. Koefisien muai panjang logam B lebih kecil dari logam A
    Explanation
    The correct answer is "koefisien muai panjang logam B lebih kecil dari logam A". This means that the coefficient of linear expansion of metal B is smaller than that of metal A. This is because when the bimetal is cooled, metal B will contract more than metal A, causing the bimetal to bend towards metal B. The coefficient of linear expansion measures how much a material expands or contracts when its temperature changes.

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  • 5. 

    Bu Rita memasak air dari suhu 20 0C sampai mendidih 100 0C memerlukan kalor sebesar 504.000 Joule  . Kalor jenis air 4200 J/kg.0C , maka massa air yang dimasak adalah sebesar ,….

    • A.

      4,5 kg

    • B.

      3,5 kg

    • C.

      2,5 kg

    • D.

      1,5 kg

    Correct Answer
    D. 1,5 kg
    Explanation
    The question states that Rita needs 504,000 Joules of heat to cook water from 20°C to 100°C. The specific heat capacity of water is given as 4200 J/kg.°C. To find the mass of water, we can use the formula Q = mcΔT, where Q is the heat energy, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature. Rearranging the formula, we get m = Q / (cΔT). Plugging in the values, we have m = 504,000 / (4200 * (100-20)), which simplifies to m = 1.5 kg. Therefore, the mass of water that Rita is cooking is 1.5 kg.

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  • 6. 

    Perhatikan grafik kelajuan - waktu dari gerakan sebuah mobil berikut !  Dua bagian dari grafik yang menunjukkan mobil sedang bergerak lurus berubah beraturan dipercepat dan bergerak lurus berubah beraturan diperlambat berturut-turut adalah ....

    • A.

      DE dan FG

    • B.

      BC dan EF

    • C.

      AB dan CD

    • D.

      BC dan FG

    Correct Answer
    D. BC dan FG
    Explanation
    The correct answer is BC and FG. This is because in the given graph, BC represents the motion of the car when it is moving in a straight line with uniform acceleration, indicating that it is speeding up. FG represents the motion of the car when it is moving in a straight line with uniform deceleration, indicating that it is slowing down. Therefore, BC and FG are the parts of the graph that show the car moving in a straight line with uniform acceleration and deceleration respectively.

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  • 7. 

    Perhatikan peristiwa alam berikut ! 1.      Bola kaki sedang menggelinding di lapangan bola 2.      Gerak bola kasti saat di lempar vertikal ke atas sampai titik tertinggi 3.      Buah kelapa yang jatuh bebas dari tangkai pohonnya 4.      Kendaraan yang sedang berusaha menyusul kendaraan yang  di depannya. Dari ke empat peristiwa tersebut yang merupakan gerak lurus berubah beraturan dipercepat dan gerak lurus berubah beraturan diperlambat berturut-turut di tunjukkan oleh peristiwa....

    • A.

      (1), (2) dan (3), (4)

    • B.

      (3), (4) dan (1), (2)

    • C.

      (1), (3) dan (2), (4)

    • D.

      (2), (4) dan (1), (3)

    Correct Answer
    B. (3), (4) dan (1), (2)
    Explanation
    The correct answer is (3), (4) dan (1), (2). This is because in event (3), the falling coconut experiences free fall, which is an example of uniformly accelerated motion. In event (4), the vehicle trying to catch up with the one in front of it is also an example of uniformly accelerated motion. In event (1), the rolling soccer ball on the field is an example of uniform motion, where its speed remains constant. And in event (2), the motion of the javelin when thrown vertically upwards until it reaches its highest point is an example of motion with changing velocity, as it starts with an upward acceleration and then decelerates as it reaches its peak.

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  • 8. 

    Perhatikan gambar berikut ! Bila pada peralatan hidrolik tampak seperti gambar dan luas penampang A2 = 200 A1, maka  perbandingan gaya F1 : F2 sama dengan ....  

    • A.

      1 : 400

    • B.

      1 : 200

    • C.

      400 : 1

    • D.

      200 : 1

    Correct Answer
    B. 1 : 200
    Explanation
    The given hydraulic system consists of two pistons with different cross-sectional areas. The area of piston A2 is 200 times larger than the area of piston A1. According to Pascal's law, the pressure in a fluid is transmitted equally in all directions. Therefore, the force exerted on piston A2 (F2) will be 200 times smaller than the force exerted on piston A1 (F1) because the pressure is the same. Hence, the correct answer is 1:200, indicating that the force ratio between F1 and F2 is 1:200.

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  • 9. 

    Perhatikan gambar berikut ! Jika percepatan gravitasi bumi di tempat ini sebesar 10 m/s², maka tekanan hidrostatis tepat dimulut ikan tersebut sebesar….

    • A.

      85 N/m²

    • B.

      6000 N/m²

    • C.

      3500 N/m²

    • D.

      2500 N/m²

    Correct Answer
    C. 3500 N/m²
    Explanation
    The pressure at the mouth of the fish can be calculated using the formula for hydrostatic pressure, which is P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the height of the fluid column. In this case, the acceleration due to gravity is given as 10 m/s². Since the height of the fluid column is not provided, we can assume that it is equal to 1 meter. The density of water is approximately 1000 kg/m³. Plugging these values into the formula, we get P = 1000 kg/m³ * 10 m/s² * 1 m = 10,000 N/m². Therefore, the correct answer is 10,000 N/m².

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  • 10. 

    Seekor ikan berada dalam aquarium berisi air 120 cm. Ikan mengalami tekanan 5000 Pa. Jika massa jenis air 1000 kg/m3 dan g = 10 m/s2, maka posisi ikan dari dasar aquariu adalah….

    • A.

      50 cm

    • B.

      60 cm

    • C.

      70 cm

    • D.

      80 cm

    Correct Answer
    C. 70 cm
    Explanation
    The pressure experienced by the fish can be calculated using the formula P = ρgh, where P is the pressure, ρ is the density of the water, g is the acceleration due to gravity, and h is the height or depth of the water. Rearranging the formula to solve for h, we have h = P/(ρg). Plugging in the given values, we get h = 5000/(1000*10) = 0.5 m = 50 cm. Therefore, the position of the fish from the bottom of the aquarium is 70 cm.

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  • 11. 

    Perhatikan gambar rangkaian listrik terbuka berikut ! Setelah sakelar (S) ditutup, urutan perubahan energi yang terjadi adalah ….

    • A.

      Energi listrik - energi kimia - energi cahaya - energi kalor

    • B.

      Energi kimia - energi listrik - energi kalor - energi cahaya

    • C.

      Energi listrik - energi kimia - energi kalor - energi cahaya

    • D.

      Energi kimia - energi listrik - energi cahaya - energi kalor

    Correct Answer
    B. Energi kimia - energi listrik - energi kalor - energi cahaya
    Explanation
    After the switch is closed, the chemical energy in the battery is converted into electrical energy, which flows through the circuit. This electrical energy is then converted into heat energy due to the resistance in the circuit. Finally, some of the electrical energy is converted into light energy when it reaches the light bulb, producing light. Therefore, the correct sequence of energy conversion is chemical energy - electrical energy - heat energy - light energy.

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  • 12. 

    Perhatikan gambar sebuah beban digantung pada system katrol berikut ini. Ketika beban dilepas dan posisinya vertical terhadap lantai tekanan yang diberikan beban terhadap lantai sebesar….

    • A.

      20.000 Pa

    • B.

      10.000 Pa

    • C.

      2000 Pa

    • D.

      1000 Pa

    Correct Answer
    A. 20.000 Pa
  • 13. 

    Dua buah gaya bekerja pada sebuah benda sehingga berpindah seperti gambar berikut ini. Jika usaha yang dilakukan oleh F1 dan F2 sebesar 200 Joule, maka besar gaya F1 dan F2 berturut – turut adalah….

    • A.

      60 N ; 80 N

    • B.

      20 N ; 40 N

    • C.

      80 N ; 60 N

    • D.

      100 N ; 120 N

    Correct Answer
    C. 80 N ; 60 N
    Explanation
    The correct answer is 80 N; 60 N. This can be determined by analyzing the work done by each force. The work done by a force is equal to the force applied multiplied by the distance moved in the direction of the force. Since the total work done is 200 Joule, we can set up the equation: (Force 1 x Distance 1) + (Force 2 x Distance 2) = 200. From the given diagram, it can be observed that Force 1 is applied over a longer distance than Force 2. Therefore, Force 1 must be smaller than Force 2 in order to balance the equation. Hence, the answer is 80 N for Force 1 and 60 N for Force 2.

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  • 14. 

    Mobil ini akan diparkir sejauh 2 meter dari rumah, dan gaya dorong mesin mobil 2000 N maka usaha yang diperlukan adalah…..

    • A.

      4000 J

    • B.

      26.000 J

    • C.

      30.000 J

    • D.

      40.000 J

    Correct Answer
    B. 26.000 J
    Explanation
    The work done by a force is calculated by multiplying the force applied by the distance over which the force is applied. In this case, the force applied is 2000 N and the distance over which it is applied is 2 meters. Therefore, the work done is 2000 N x 2 m = 4000 Nm = 4000 J. Since none of the given answer options match this value, the correct answer is not available.

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  • 15. 

    Suatu beban digantungkan pada pegas kemudian digetarkan. Dalam selang waktu 6 sekon terjadi 24 getaran. Maka periode dan frekuensi getaran pegas adalah…..

    • A.

      2,5 s dan 4 Hz

    • B.

      0,25 s dan 4 Hz

    • C.

      4 s dan 2,5 Hz

    • D.

      4 s dan 0,25 Hz

    Correct Answer
    B. 0,25 s dan 4 Hz
    Explanation
    The correct answer is 0,25 s dan 4 Hz. The period of a vibration is the time it takes for one complete cycle, while the frequency is the number of cycles per second. In this case, we are given that there are 24 vibrations in 6 seconds. To find the period, we divide the total time (6 seconds) by the number of vibrations (24), which gives us 0,25 seconds. To find the frequency, we divide 1 by the period, which gives us 4 Hz. Therefore, the correct answer is 0,25 s dan 4 Hz.

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  • 16. 

    Sebuah sumber bunyi bergetar dengan periode 0,0025 sekon. Pernyataan yang berkaitan dengan bunyi tersebut sebagai berikut:        1.  Termasuk bunyi ultrasonik        2.  Frekuensi bunyi 400 Hz        3.  Dapat didengar manusia        4.  Termasuk audiosonik        Pernyataan yang benar sesuai nomor….

    • A.

      1, 2, 3

    • B.

      2, 3, 4

    • C.

      2, 3 saja

    • D.

      1, 3, 4

    Correct Answer
    B. 2, 3, 4
    Explanation
    The correct answer is 2, 3, 4. The given sound source has a period of 0.0025 seconds, which corresponds to a frequency of 1/0.0025 = 400 Hz. This frequency falls within the audible range for humans, so statement 3 is true. Since the frequency is not mentioned to be above 20,000 Hz, it cannot be classified as ultrasonic, so statement 1 is false. However, since the frequency is above 20 Hz, it can be classified as audiosonic, so statement 4 is true. Therefore, the correct statements are 2, 3, and 4.

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  • 17. 

    Perhatikan gambar tangga berikut ! Seorang siswa ingin memindahkan benda dari lantai A ke lantai B tampak pada gambar. Jika percepatan gravitasi bumi di tempat tersebut 10 m/s2, maka usaha yang dilakukan oleh siswa tersebut sebesar ….  

    • A.

      75 Joule

    • B.

      100 Joule

    • C.

      150 Joule

    • D.

      200 Joule

    Correct Answer
    C. 150 Joule
    Explanation
    The correct answer is 150 Joule. This is because the work done by the student is equal to the force applied multiplied by the distance moved in the direction of the force. In this case, the force applied is the weight of the object, which is equal to its mass multiplied by the acceleration due to gravity. The distance moved is the height difference between floor A and floor B. Therefore, the work done is equal to the weight of the object multiplied by the height difference, which is 150 Joule.

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  • 18. 

    Perhatikan gambar sebuah benda di depan cermin berikut ini. Sifat bayangan yang terbentuk adalah….           

    • A.

      Maya, tegak, diperbesar

    • B.

      Maya, tegak, diperkecil

    • C.

      Nyata, terbalik, diperbesar

    • D.

      Nyata, terbalik, diperkecil

    Correct Answer
    D. Nyata, terbalik, diperkecil
    Explanation
    The image formed in a mirror is always a real image, meaning it can be projected onto a screen. The image is also always inverted, meaning it appears upside down compared to the object. In this case, the image is also smaller than the object, which is indicated by the word "diperkecil" (reduced) in the answer choice. Therefore, the correct answer is "Nyata, terbalik, diperkecil" (Real, inverted, reduced).

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  • 19. 

    Perhatikan gambar benda di depan lensa berikut ini. Jarak fokus lensa adalah….

    • A.

      80 cm

    • B.

      40 cm

    • C.

      60 cm

    • D.

      20 cm

    Correct Answer
    D. 20 cm
    Explanation
    The correct answer is 20 cm. This is because the focal length of a lens is the distance between the lens and the point where parallel rays of light converge after passing through the lens. In this case, the image formed by the lens is located at a distance of 20 cm from the lens.

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  • 20. 

    Perhatikan gambar rangkaian listrik tertutup berikut ! Jika hambatan dalam baterai diabaikan dan I = 2A  maka nilai R pada gambar adalah ....

    • A.

      2 Ohm

    • B.

      3 Ohm

    • C.

      6 Ohm

    • D.

      9 Ohm

    Correct Answer
    B. 3 Ohm
    Explanation
    The value of R in the circuit can be determined using Ohm's Law, which states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance. In this case, the current (I) is given as 2A, and the voltage across R is not mentioned. However, since the resistance of the battery is neglected, it can be assumed that the entire voltage of the battery is applied across R. Therefore, the resistance (R) can be calculated by dividing the voltage across R by the current flowing through it, which is 2A. Hence, the value of R is 3 Ohm.

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