Light

Front

Why can't we see anything in a dark room?

Back

No light reaches our eyes.

Front

Which of the following are used in projectors? A) Concave lens, B) Convex mirrors, C) Plane mirrors, D) Convex lenses

Back

Convex lenses

Front

What happens during lateral inversion?

Back

The right side of the object will be on the left side of the image.

Front

Which one of the following statements is true?
A) A plane mirror sometimes forms an inverted image.
B) A concave mirror always forms a virtual, erect and diminished image.
C) A concave lens always forms a virtual, erect and diminished image.
D) All of the above

Back

A concave lens always forms a virtual, erect and diminished image.

Front

A reflecting surface is curved outwards. Which type of mirror is it likely to be?

Back

Convex

Front

Why are convex mirrors used by drivers as rear view mirrors in vehicles?

Back

They give a wide field of view.

Front

An object placed 3 m from a plane mirror is shifted by 0.4 m away from the mirror. What is the new distance between the object and its image?

Back

6.8 m

Front

An object was placed in front of the plane mirror. How will its image formed in plane mirror look like?

Back

Front

Why is a spectrum of seven colours formed when sunlight passes through a prism?

Back

The different colours of light is reflected at different angles in a glass prism.

Front

Which of the following letters will be seen without any change in a plane mirror? A) S, B) T, C) L, D) P

Back

T