Question # 1

What is the colour of an object that absorb all the light that hits it.

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Black

Green

White

Red

-------------------- is/are used to coat the backside of the mirror.

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Silver

Copper

Aluminium

Silver and Aluminium

In a convex mirror, focus is.

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Under the mirror

In front of the mirror

On the mirror

Behind the mirror

What happens when light hits a shiny or smooth surface.

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It is disappeared

It is refracted

It is absorbed

It is reflected

Speed of light through water is about.

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300000 km/s

250000 km/s

225000 km /s

200000 km/s

Through which of the following the light travels the fastest.

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Prism

Water

Air

Vacuum

Speed of light through air is about.

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300000 km/s

250000 km/s

225000 km /s

200000 km /s

The image formed by a convex mirror is.

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Real and upright

Real and inverted

Virtual and upright

Virtual and inverted

The pole of spherical mirror is also called.

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Principal axis

Focus

Vertex

Focal leangth

Angle of incidence is equal to he angle of reflection ,It is first law of.

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Refraction

Dispersion

Reflection

Diffraction

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General Science 8th Class English Medium Chapter 9 Online Test MCQs With Answers

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