Miscellaneous Quiz 3

1.

Derived quantity differs from fundamental quantity in that the derived quantity

Is the product of two quantities

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Always involves two types of quantities only

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Involves two or more quantities

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Is the product of more than two quantities

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Is the quotient of two quantities

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2.

A floating body experiences an Upthrust which is equal to:

Weight of fluid displaced

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Weight of the body in which floats

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Volume of the fluid displaced

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Weight of fluid in which the body floats

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Density of the liquid displaced

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3.

When water is heated from 0°C to 25°C its volume

Decreases up to 4°C then increases

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Remain constant up to 4°C then increases

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Remain constant for any temperature change

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Keeps on increasing

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Keeps on decreasing

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4.

Which method of heat transfer is caused by differences of densities in fluids?

Convection

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Conduction

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Radiation

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Condensation

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Convection and radiation

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5.

Small gaps are left between the metal rails on railway tracks in order to allow for …

Expansion of the metal rails on cold days

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Contraction of the metal rails on hot days

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Expansion and contraction of the metal rails on very

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Expansion of the metal rails on hot days

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Contraction of the metal rails during the night

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6.

Which among the following is the reason for the sky appears blue while observed from the earth?

Regular reflection of sunlight

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Irregular refraction of sunlight

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Diffuse refraction of sunlight

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Selective scattering of sunlight

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Regular diffraction of sunlight

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7.

Immediately after taking a bath on a hot and dry day, you feel cold. This is because of heat transfer by;

Conduction

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Convection

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Radiation

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Latent heat

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Conduction and convection

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8.

Which pairs of instruments would you use to correctly measure the diameter of a small ball bearing?

Measuring tape and vernier caliper

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Slide rule and micrometer screw gauge

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Vernier caliper and slide rule

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Micrometer screw gauge and vernier caliper

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Metre rule and micrometer screw gauge

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9.

A body moved upward a distance of 20 m. Calculate the time taken to reach the maximum height.

2 s

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5 s

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10 s

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15 s

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11 s

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10.

Which factors influence friction between tyres of a car moving with constant speed and surface of the road?

Weight and speed

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Speed and nature of the surface

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Nature of the surface and weight

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Surface area of the tires and speed

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Acceleration and nature of the surface

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