Question # 1

The vector which has the same effect as the combined effect of vectors:

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Negative vector

The vector

Resultant vector

Zero vector

The product of mass and _______ is called momentum;

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Velocity

Force

Acceleration

None

In a dam the water energy is called:

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Heat energy

Electrical energy

G.P.E

Mechanical enrgy

The acceleration produced in a moving body is always in the direction of applied

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Velocity

Force

Speed

Momentum

How many times Mercury is denser than water?

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12.5

13.6

76

76.5

Displacement is a quantity.

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Scalar

Vector

Both a and b

None of these

Transfer of heat by the actual movement of molecules from one place to the other is called

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conduction

convection

radiation

waves

The unit of heat capacity is:

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Jkg k

JK^-1

Jkg^-1K

J^-1kg^-1K^-1

At sea level, the height of mercury column in mercury barometer is approximately:

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72 cm

74 cm

76 cm

78 cm

The least count of vernier callipers is.

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.01 mm

0.1 mm

.001 mm

.01 m

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

A large water reservoir keeps the temperature of nearby land moderate due to

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Low temperature of water

Low specific heat of water

Less absorption of heat

Large specific heat of water

The force exerted by earth on moon is :

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2.01× 1020 N

2.01× 1020 Kg

2.01× 1021 N

2.01× 1022 Kg m/s2

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