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Top Important Science Questions For JKSSB Sub Inspector exam Available Now

Science Questions For JKSSB Sub Inspector

1. An object will continue to accelerate until the resultant force:
A. Becomes zero
B. Is increased continuously
C. Begins to decrease
D. Changes the direction of velocity

Answer: A โ€“ Becomes zero

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2. What is the momentum of an object of mass m, moving with a velocity v?
A. (mv)2
B. mv2
C. ยฝ mv2
D. mv

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Answer: D โ€“ mv

3. According to second law of motion โ€œthe rate of change of momentum is directly proportional to
โ€ฆโ€ฆโ€ฆโ€ฆโ€ฆโ€ฆ appliedโ€
A. Pressure
B. Force
C. Acceleration
D. Torque

Answer: B โ€“ Force

 

4. Rocket works on the principle of conservation of:
A. Mass
B. Energy
C. Momentum
D. Velocity

 

Answer: C โ€“ Momentum

 

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5. The inertia of an object tends to cause the object:
A. to increase its speed
B. to decrease its speed
C. to resist any change in its state of motion
D. to decelerate due to friction

 

Answer: C โ€“ to resist any change in its state of motion

 

6. According to the third law of motion, action and reaction:

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A.always act on the same body
B. always act on different bodies in opposite directions
C. have same magnitude and directions
D. act on either body at normal to each other

 

Answer: B. always act on different bodies in opposite directions

 

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