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Top Important Science Questions For JKSSB Sub Inspector exam Available Now

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Top Important Science Questions For JKSSB Sub Inspector exam Available Now

1. An object will continue to accelerate until the resultant force:A. Becomes zeroB. Is increased continuouslyC. Begins to decreaseD. Changes the direction of velocity

Answer: A – Becomes zero

2. What is the momentum of an object of mass m, moving with a velocity v?A. (mv)2B. mv2C. ½ mv2D. mv

Answer: D – mv

3. According to second law of motion “the rate of change of momentum is directly proportional to……………… applied”A. PressureB. ForceC. AccelerationD. Torque

Answer: B – Force

 

4. Rocket works on the principle of conservation of:A. MassB. EnergyC. MomentumD. Velocity

 

Answer: C – Momentum

 

5. The inertia of an object tends to cause the object:A. to increase its speedB. to decrease its speedC. to resist any change in its state of motionD. to decelerate due to friction

 

Answer: C – to resist any change in its state of motion

 

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

A.always act on the same bodyB. always act on different bodies in opposite directionsC. have same magnitude and directionsD. act on either body at normal to each other

 

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

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