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