i) Define the term momentum. ii) How is force related to the mom

Subject

Physics

Class

ICSE Class 10

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Sample Papers

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 Multiple Choice QuestionsOne Word Answers

1.

Name the radioactive radiations which have the least penetrating power. 

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 Multiple Choice QuestionsShort Answer Type

2.

A boy weighs 360 N on Earth.

i) What would be his approximate weight on the moon?

ii) What is the reason for your answer?
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3.

A body is acted upon by a force. State two conditions under which the work done could be zero. 

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4.

A spring is kept compressed by a small trolley of mass 0.5 kg lying on a smooth horizontal surface as shown in the figure:



When the trolley is released, it if found to move at a speed of 2 m/s. What potential energy did the spring possess when compressed?     
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5.

i) Define the term momentum.

ii) How is force related to the momentum of a body?

iii) State the condition when the change in momentum of a body depends only on the change in its velocity. 


i) Momentum is defined as the product of mass and velocity of a body.

ii) Force  = Rate of change in momentum

straight F space equals space increment straight P divided by increment straight t space

iii) When velocity of the body is much smaller than the velocity of light, then the mass is constant. 

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6.

A body of mass 50 kg has a momentum 3000 kg m/s. Calculate:

i) the kinetic energy of the body.

ii) the velocity of the body. 

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7.

i) Why is the mechanical advantage of a lever of the second order always greater than one?

ii) Name the type of single pulley that has a mechanical advantage greater than one. 
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8.

i) What is meant by refraction of light?

ii) What is the cause of refraction of light? 

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9.

The refractive index of diamond is 2.42. What is meant by this statement? 

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10.

A stick partly immersed in water appears to be bent. Draw a ray diagram to show the bending of the stick. When placed in water and viewed obliquely from above. 

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