Question # 1

SI unit of time is.

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S

min

hr

all above

an example of non-contact force is

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Magnetic force

Crane lifting heavy object

Frictional force

A tug of war

An example of contact force.

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Electrostatic force

Muscular force

gravity

Magnetic force

A batsman hits the ball back towards the bowler, which effect of force is seen.

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change of shape

Change of direction

Change of stae from motion to rest

Change of state form rest to motion.

Which one of the following statements is correct.

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1 m = 1000 km

m/s is the unit of displacement.

N is the unit of force

1 h = 60 s

Value of "g" is taken on Earth is.

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1.6 N/kg

9 N/kg

10 N /kg

100 N /kg

The Earth's gravitational field strength is.

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1.6 N/kg

16 N/kg

10 N/kg

1N/kg

The Earth's pull on the objects is called.

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Gravity

Frictional force

Electrostatic force

Magnetic force

Value of g on moon is

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1.6 N/kg

16 N /kg

10 N/g

1 N/kg

The force between two negatively charged particles is.

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Gravitational

Frictional

Repulsion

Attraction

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