Question # 1

If a 20 N wight of block hang with the string vertically then tension in string is:

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0 N

20 N

2 N

10 N

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

The bad conductor of Heat is:

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Iron

Copper

Air

Aluminium

The process in which heat is transmitted form one body to another by the interaction of atoms and the movement of free electrons is known as

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convection

radiation

conduction

both (a) and (b)

The unit of gravitational constnat is:

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Nm² kg

Nm²kg^-2

Nm²kg^-1

N - m²

If base of a right angle triangle is 3 cm and perpendicular is 4 cm. What is length of perpndicular?

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3 cm

2 cm

5 cm

10 cm

When a stress on a body crosses the limit, called the?

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Elastic limit

Plastic limit

Failure point

Breaking point

The density of a substance can be found with the help of:

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Pascal's law

Hook's law

Archimedes principle

Principle of floatation

SI unit of temperature is.

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Fahrenheit

Centigrade

Kelvin

All of these

a ball is thrown vertically upward. Its velocity at the highest point is.

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10 ms^-2

-10 ms^-1

Zero

none of them

What should be approximate length of a glass tube to construct of water barometer?

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0.5 m

1 m

2.5 m

11 m

Decrease in atmospheric pressure predicts:

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Rainy condition

Intense condition

Windy Condition

Pleasant condition

The formula of pressur is:

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Fx a

A/F

F/A

None of these

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