Question

Choose the correct option.


1. Expansion in liquid is _______ expansion in solids.

I.Less than

II.Greater than

III.Equal to

IV.None of these


2. The principle behind the thermostat switch is-

I. Expansion of solids

II. An equal expansion of solids

III. An equal temperature of solids

IV. An equal heat of solids.


3. We get heat from the sun by

I. Conduction

II. Convection

III. Radiation

IV. Insulation


4. Which of the following energy transformation occur in an electric cell?

I. Chemical into electrical

II. Electrical into chemical

III. Mechanical into electrical

IV. Light into chemical.

5. Animals and humans use ______ energy to run and walk.

I. Chemical

II. Muscular

III. Mental

IV. Inner.


6. A drilling machine has rotatory as well as

I. Rectilinear

II. Curvilinear

III. Oscillatory

IV. Periodic


7. Weight of an object at center of the earth is-

I. Zero

II. 9.8

III. 10

IV. Can't measure.


8. Weight of the body on the moon is ______ of its weight on the earth.

I. One sixth

II. Half

III. One fourth

IV. One eighth.


9. A book of length 15 cm and breadth 10 cm is kept on a table. Its area would be

I. 15cm²

II. 10cm²

III. 150cm²

IV. 150m²


10. Speed of a moving object cannot be

I. Zero

II. 10

III. 20

IV. 100
​

Answer 1

Answer:

1 less than

2)An equal expansion of solid

3 Radiation

4 chemical energy to electrical

5 muscle

6 periodic

7 9.8

8 one fourth

9 150 CM 2

10 zero

I hope my answer was useful

please mark as brainlist

Answer 2

Answer:

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lV.

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lV.

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