Science: Physics Quiz
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- 1.Waves travels on water surface through _____________________
- A.
Molecules
- B.
Atoms
- C.
Disturbance
- D.
Mass
- 2.If the object is placed between f and 2f of convex lens, the image will be formed at ____________________.
- A.
At 2f
- B.
Beyond 2f
- C.
At f
- D.
Between f and 2f
- 3.The distance between two point charges is 20cm. if the distance is reduced to 10cm, the Coulomb force would become____________________.
- A.
Half
- B.
Two times
- C.
One fourth
- D.
Four times
- 4.In hot summer days reflection of water is seen on the road due to ______________.
- A.
Reflection
- B.
Refraction
- C.
Total internal reflection
- D.
Dispersion
- 5.
- A.
Lines of force
- B.
Direct current
- C.
Emf
- D.
Alternating current
- 6.The half-life of radium is 1600 years. How much of 120g of radium will be left after 4800 year?
- A.
120g
- B.
60g
- C.
30g
- D.
15g
- 7.The relation between linear expansion and volume expansion is ____________.
- A.
β = α/2
- B.
α = 3 β
- C.
β = 3 α
- D.
α = β/2
- 8.A galvanometer is converted into ammeter when we connect a ____________
- A.
High resistance in series
- B.
High resistance in parallel
- C.
Low resistance in series
- D.
Low resistance in parallel
- 9.The interval of 200µs is equivalent to_____________________.
- A.
0.2 sec
- B.
0.02sec
- C.
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- D.
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- 10.If the capacitance of a capacitor is 10μF and potential difference is 2 volts then charge stored is _______________.
- A.
20 coulomb
- B.
200 coulomb
- C.
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- D.
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- 11.Fahrenheit equivalent of 0K is__________________________.
- A.
– 273F°
- B.
– 459F°
- C.
0F°
- D.
100F°
- 12.The work done will be zero when the angle between the force and the distance is ______________________.
- A.
45°
- B.
60°
- C.
90°
- D.
180°
- 13.If mass of both the bodies is 1Kg and distance between their centers is 1m then gravitational force will be:
- A.
G
- B.
G
- C.
V
- D.
None
- 14.For the propagation of signals in our body _________________energy is used.
- A.
Heat
- B.
Electrical
- C.
Chemical
- D.
Mechanical
- 15.If the zero of the circular scale is below the horizontal line the zero error is to be_______________
- A.
Added
- B.
Subtracted
- C.
Multiplied
- D.
Divided
- 16.
- A.
Free electron
- B.
Bound electron
- C.
Hole
- D.
Electron
- 17.
- A.
Magnet
- B.
Permanent magnet
- C.
Temporary Magnet
- D.
None of these
- 18.For scientific notation internationally accepted practice is that there should be ______________digit before the decimal point.
- A.
One
- B.
Two
- C.
Three
- D.
No
- 19.A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?
- A.
It falls with constant acceleration.
- B.
It falls with constant speed.
- C.
It falls with decreasing acceleration.
- D.
It falls with decreasing speed
- 20.
- A.
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- B.
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- C.
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- D.
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- 21.State and prove Gauss's Law in electrostatics and express the law in differential forms.(Give brief answers)
- 22.
- 23.
- 24.
- 25.Why should we consider you for the teaching job in our school?
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