When a body is placed on a table top, it exerts a force equal to

Subject

Physics

Class

ICSE Class 10

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 Multiple Choice QuestionsFill In the Blanks

1.

A scissor is a ………….. multiplier.

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2.

1 kWh = …………….. J.     

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3.

For a fuse, higher the current rating ….. is the fuse wire. 

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4.

On reversing the direction of the current in a wire, the magnetic field produced by it gets .....

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 Multiple Choice QuestionsShort Answer Type

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5.

When a body is placed on a table top, it exerts a force equal to its weight downward on the table top but does not move or fall.

i) Name the force exerted on the table top.

ii) What is the direction of the force? 


i) Normal reaction force

ii) The force acts normal to the surface of the table top i.e., opposite to the direction of the force due to the weight of the body.

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6.

b) i) What is the S.I unit of moment of force?

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7.

Name the factors affecting the turning effect of a body? 

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8.

On what factor does the position of the centre of gravity of a body depend? 

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9.

How is work done by a force measured when the force:

i) is in the direction of displacement

ii) is at the angle to the direction of displacement.
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10.

State the energy changes in the following while in use:

i) Burning of a candle

ii) A steam engine
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