Ball pen functions on the principle of :

Related MCQs

• A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that –
• If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will –
• A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will -
• A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will -
• A fountain pen works on the principle of
• On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because –
• A spherical ball made of steel when dropped in mercury container will –
• The swing of a spinning cricket ball in air can be explained on the basis of –
• A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding?
• While catching a ball, a player pulls down his hands to lower the –