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Physics GK Question Quiz 4

Que: What happens when a body is moving in a circular path with a constant speed?
1. Force acting on it is zero
2. Acceleration is not uniform
3. Velocity is uniform
4. Velocity is changing
Correct Answer :- Velocity is changing

Que: What happens when an object falls freely?
1. Kinetic energy increases
2. Potential energy increases
3. Potential energy is converted to kinetic energy
4. Potential energy decreases
Correct Answer :- Potential energy increases

Que: A girl travels 6m towards east and then 8 m towards north. Her displacement is:
1. 7 m
2. 10 m
3. 14 m
4. 2 m
Correct Answer :- 10 m / 10 मी.

Que: The SI unit of velocity is:
1. ft/s
2. m/s
3. km/h
4. m/h

Que: The value of acceleration due to gravity is:
1. same at equator and poles
2. increased from pole to equator
3. least at equator
4. least at poles
Correct Answer :- least at equator

Que: The unit of sound intensity is:
1. J/m2
2. W/m2
3. W/s
4. J/s

Que: Which one of the following statements is TRUE about internal combustion engines?
1. 4-Stroke engines are less efficient but generate more power than 2-stroke engines.
2. 4-Stroke engines are less fuel efficient and generate less power than 2-stroke engines.
3. 4-Stroke engines are more efficient and generate more power than 2-stroke engines.
4. 4-Stroke engines are more fuel efficient but generate less power than 2-stroke engines.
Correct Answer :- 4-Stroke engines are more fuel efficient but generate less power than 2-stroke engines.

Que: A bag of wheat is weighed at a place near the equator and the same is taken to Antarctica. The weight of the bag will be_________.
1. same at both the places
2. less at Antarctica
3. more at Antarctica
4. zero at Antarctica
Correct Answer :- more at Antarctica

Que: An electric train is moving with a speed of 180 km/h. How much distance will it cover in 1 minute?
1. 180 m
2. 50 m
3. 300 m
4. 3 km

Que: In vacuum, a beach ball falls at the same rate as an apple because: /
1. in vacuum there is no gravity
2. the frictional force acting on both is the same
3. the acceleration due to gravity is same for both
4. in vacuum the gravitational force acting on both is the same
Correct Answer :- the acceleration due to gravity is same for both

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