Light: Mock Test

Which of the following objects does not emit light of its own?

• Sun

• Star

• Firefly

• Moon

During the afternoon the shadow formed is very _____.

• big

• humongous

• small

• straight

Speed of light is _______.

• 3 x 15 m/s

• 3 x 10⁸ m/s

• 3 x 10⁶ m/s

• 4 x 10⁸ m/s

Mirror reflection gives a ________ image.

• clear

• dotted

• dim

• different

Candles and oil lamps are ________ sources of light.

• opaque

• non-luminous

• natural

• artificial

_________ image produced from the mirror cannot be obtained on the screen.

• Virtual

• Real

• Erect

• Inverted

Light source, _____ and opaque objects are required to form a shadow.

Light travels in a ______ line.

A ________ only shows the shape or outline of the object and not the details.

A simple camera, without a lens, in the shape of a box.