Physics
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Which is a suitable method to decrease friction:
Answer: D. All of the above Ball and roller bearing, lubrication and polishing are the suitable method to decrease friction.
Answer: D. All of the above
See lessBall and roller bearing, lubrication and polishing are the suitable method to decrease friction.
Force of limiting friction for a body and a surface:
Answer: B. Decrease if the surface is inclined Force of limiting friction for a body and a surface decrease if the surface is included.
Answer: B. Decrease if the surface is inclined
See lessForce of limiting friction for a body and a surface decrease if the surface is included.
Force of limiting friction:
Answer: C. Remains unaffected due to a change in velocity Force of limiting friction remains unaffected due to a change in velocity.
Answer: C. Remains unaffected due to a change in velocity
See lessForce of limiting friction remains unaffected due to a change in velocity.
Angel of friction and angel of repose are:
Answer: A. Equal to each other Angel of friction and angel of repose are equal to each other.
Answer: A. Equal to each other
See lessAngel of friction and angel of repose are equal to each other.
If surface is smoothened, how will it affect the angle of friction:
Answer: A. It will decrease If a surface is smoothened, it affect the angel of friction it will decrease.
Answer: A. It will decrease
See lessIf a surface is smoothened, it affect the angel of friction it will decrease.
A shell, in its flights, explodes into four unequal parts. Which of the following is conserved:
Answer: A. Momentum A shell, in its flights, explodes into four unequal parts. Momentum is conserved.
Answer: A. Momentum
See lessA shell, in its flights, explodes into four unequal parts. Momentum is conserved.
A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. What is conserved :
Answer: C. Momentum alone A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. It conserved momentum alone.
Answer: C. Momentum alone
See lessA bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. It conserved momentum alone.
An athlete runs some distance before taking a long jump, because:
Answer: A. It helps him to gain energy An athlete runs some distance before taking a long jump, because it helps him to gain energy.
Answer: A. It helps him to gain energy
See lessAn athlete runs some distance before taking a long jump, because it helps him to gain energy.
If a constant force is applied to a mass, it moves with a uniform:
Answer: B. Acceleration If a constant force is applied to a mass, it moves with a uniform acceleration.
Answer: B. Acceleration
See lessIf a constant force is applied to a mass, it moves with a uniform acceleration.
‘newton sec’ stands for the unit of:
Answer: D. Momentum 'newton sec' stands for the unit of momentum.
Answer: D. Momentum
See less‘newton sec’ stands for the unit of momentum.