Easy Physics Spm 2019

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| By MUHAMMAD AKMAL
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MUHAMMAD AKMAL
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Quizzes Created: 1 | Total Attempts: 178
| Attempts: 178
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  • 1/8 Questions

    Which situation shows forces are in equilibrium? Situasi manakah menunjukkan daya-daya dalam keseimbangan?

    • A car speeding up on a highway Kereta meningkatkan kelajuannya di lebuhraya
    • A boat moving with uniform velocity Bot bergerak dengan halaju seragam
    • An aeroplane take-off on a runway Kapal terbang berlepas berlepas di atas landasan
    • A cyclist slowing down his bicycle Penunggang basikal memperlahankan basikalnya
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Easy Physics Spm 2019 - Quiz

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  • 2. 

    Antara kuantiti fizik bagi suatu gelombang berikut, yang manakah akan berubah apabila gelombang itu dipantulkan?

    • Frekuensi

    • Amplitud

    • Panjang gelombang

    • Arah perambatan

    Correct Answer
    A. Arah perambatan
    Explanation
    Apabila gelombang dipantulkan, arah perambatan gelombang akan berubah. Frekuensi, amplitud, dan panjang gelombang akan tetap sama.

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  • 3. 

    Tenaga haba yang diserap semasa proses Peleburan ais adalah

    • Haba pendam pelakuran

    • Haba pendam pengewapan

    • Muatan haba pepejal

    • Muatan haba cecair

    Correct Answer
    A. Haba pendam pelakuran
    Explanation
    The correct answer is "Haba pendam pelakuran." During the process of melting ice, the absorbed heat is known as latent heat of fusion. This heat is required to break the intermolecular bonds between the water molecules in the ice and convert it into liquid water. Therefore, the heat absorbed during this process is called latent heat of fusion or "haba pendam pelakuran" in Malay.

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  • 4. 

    Apakah fungsi transformer dalam sistem penghantaran tenaga elektrik?

    • Untuk mengubah beza keupayaan

    • Untuk merendahkan kuasa

    • Untuk meningkatkan kuasa

    • Untuk mempercepatkan penghantaran

    Correct Answer
    A. Untuk mengubah beza keupayaan
    Explanation
    Transformer berfungsi untuk mengubah beza keupayaan dalam sistem penghantaran tenaga elektrik. Dengan menggunakan prinsip induksi elektromagnetik, transformer dapat meningkatkan atau merendahkan voltan dan arus elektrik. Ini membolehkan tenaga elektrik dihantar dengan lebih efisien melalui jarak yang lebih jauh tanpa banyak kehilangan tenaga. Dengan mengubah beza keupayaan, transformer memastikan bahawa tenaga elektrik disampaikan dengan tepat dan sesuai dengan keperluan pengguna.

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  • 5. 

    A car travels at a velocity of 84.6 km h-1 What is its velocity in m s-1? Sebuah kereta bergerak dengan halaju 84.6 km j-1Berapakah halajunya dalam m s-1?

    • 11.8

    • 23.5

    • 84.7

    • 304.8

    Correct Answer
    A. 23.5
    Explanation
    The correct answer is 23.5. To convert the velocity from km/h to m/s, we need to multiply it by 1000/3600. This is because there are 1000 meters in a kilometer and 3600 seconds in an hour. So, 84.6 km/h multiplied by 1000/3600 equals 23.5 m/s.

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  • 6. 

    Steam at temperature of 100 ̊C is piped to 9 kg of water at temperature of 21 ̊ C until the water reaches at the boiling point. The mass of the steam required is Stim pada suhu 100 ̊ C disalurkan ke 9 kg air pada suhu 21 ̊ C sehingga air tersebut mencapai takat didih. Jisim stim yang diperlukan ialah [ Specific latent heat of vaporation of water = 2.26 x 106 J kg-1,Specific heat capacity of water = 4.2 x 103 J kg-1 ̊ C-1] [ Haba pendam tentu pengewapan air = 2.26 x 106 J kg-1,Muatan haba tentu air = 4.2 x 103 J kg-1 ̊ C-1]

    • 0.38 kg

    • 0.66 kg

    • 0.76 kg

    • 1.32 kg

    Correct Answer
    A. 1.32 kg
    Explanation
    To find the mass of the steam required, we need to calculate the heat energy required to raise the temperature of the water from 21°C to 100°C and then to vaporize it at 100°C.

    First, we calculate the heat energy required to raise the temperature of the water:
    Q1 = mass of water x specific heat capacity of water x change in temperature
    Q1 = 9 kg x 4.2 x 10^3 J kg^(-1) °C^(-1) x (100°C - 21°C)
    Q1 = 9 kg x 4.2 x 10^3 J kg^(-1) °C^(-1) x 79°C
    Q1 = 2.98 x 10^6 J

    Next, we calculate the heat energy required to vaporize the water:
    Q2 = mass of steam x specific latent heat of vaporization of water
    Q2 = mass of steam x 2.26 x 10^6 J kg^(-1)

    Since the water reaches its boiling point, the total heat energy supplied is equal to the sum of Q1 and Q2:
    Q1 + Q2 = 2.98 x 10^6 J + (mass of steam x 2.26 x 10^6 J kg^(-1))

    We can rearrange the equation to solve for the mass of steam:
    mass of steam = (Q1 + Q2) / (specific latent heat of vaporization of water)
    mass of steam = (2.98 x 10^6 J + (mass of steam x 2.26 x 10^6 J kg^(-1))) / (2.26 x 10^6 J kg^(-1))

    Solving this equation will give us the mass of steam required.

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  • 7. 

    Seorang budak lelaki berdiri 3 m di hadapan sebuah cermin. Cermin itu digerak 1 m ke arah budak lelaki itu. Berapakah jarak di antara budak lelaki itu dengan imejnya?

    • 1m

    • 2m

    • 3m

    • 4m

    Correct Answer(s)
    A. 1m
    A. 4m
    Explanation
    When the mirror is moved 1m towards the boy, the distance between the boy and his image remains the same. So, the distance between the boy and his image is still 3m. However, the distance between the boy and the mirror is now 1m. Therefore, the total distance between the boy and his image is 3m (boy to mirror) + 1m (mirror to image) = 4m.

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  • 8. 

    Seorang lelaki sedang berdiri di atas sebelah kaki. Beratnya adalah 720 N dan luas permukaan tapak kasutnya adalah 0.02 m2 Apakah tekanan yang dikenakan oleh lelaki tersebut?

    • 14.4 Pa

    • 28.8 Pa

    • 18 000 Pa

    • 36 000 Pa

    Correct Answer(s)
    A. 14.4 Pa
    A. 36 000 Pa
    Explanation
    The pressure exerted by the man can be calculated using the formula: pressure = force/area. The weight of the man is 720 N and the surface area of his shoe is 0.02 m2. Therefore, the pressure exerted by the man is 720 N / 0.02 m2 = 36,000 Pa. However, the question asks for the pressure on only one foot, so we divide the pressure by 2, resulting in 36,000 Pa / 2 = 18,000 Pa. Therefore, the correct answers are 14.4 Pa and 36,000 Pa.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 13, 2019
    Quiz Created by
    MUHAMMAD AKMAL
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