Question # 1

The value of 'g' is maximum

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At mountains

At plains

At the surface of earth

At sea level

The product of mass and velocity is called ................. .

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Momentum

Force

Acceleration `

Nil

Light from the sun contain thermal radiation of:

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Long wavelength

Short wavelength

Ultra violet rays

Visible light

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 insulator of heat is:

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Cork

Cotton

Wood

All

A sugar bag of 1 kg has a momentum 25 kg m/s than its velocity is :

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v = 20 m/s

v = 25 kg

V = 25 m/s

v = 25 kg/ms-1

The average speed of cheetah is.

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60 kmh^-1

70 kmh^-1

75 kmh^-1

80 kmh^-1

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

The word science means.

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Intelligence

Nature

Knowledge

Philosphy

The least count of screw gauge is.

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.01 mm

0.1 mm

.001 mm

.01 m

Which of the substance is the lightest one?

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Copper

Mercury

Aluminim

Lead

A crate is moved by pulling the rope attached to it. it moves 10 m on straight horizontal read by a force of 100 N. How much work will be done when the rope is making an angle of 30° with the road?

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5 Joules

86 Joules

707 Joules

866 Joules

Gallium (element) melts at:

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40 °C

30 °C

80 °C

90 °C

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