Q2.A body of mass 1 kg is thrown upwards with a
velocity 20 m s−1. It momentarily comes to rest after attaining a
height of 18 m. How much energy is lost due to air friction?. (Take g= 10ms-2
)
Answer : Option AExplaination / Solution: No Explaination.
Q3.A particle is moving with a constant velocity along a line parallel to positive X-axis. The magnitude of its angular momentum with respect to the origin is,
Answer : Option DExplaination / Solution: No Explaination.
Q7.Two identically sized rooms A and B are connected by an open door. If the room A is air conditioned such that its temperature is 4° lesser than room B, which room has more air in it?
Answer : Option AExplaination / Solution: No Explaination.