# Light

## Why does a red coloured object seem to be red?

A
It reflect red colour.
B
It allows red colour to pass through.
C
It scatters red colour.
D
It absorb red colour.
Hard
View solution>
Assertion

Reason

## Only a real image can be formed on a screen.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Assertion is incorrect but Reason is correct
Hard
View solution>

## The image formed by a plane mirror is:

A
Virtual and erect
B
Virtual and inverted
C
Real and erect
D
Real and inverted
Hard
View solution>

## If you write your name or any other word or sentence on a piece of paper and hold it in front of a plane mirror, how does it appear in the mirror?

A
The letters get laterally inverted
B
The letters get transversely inverted
C
The letters remain unchanged
D
None of the above
Hard
View solution>

## Study the given ray diagrams and select the correct statement from the following:

A
Device X is a concave mirror and device Y is a convex lens, whose focal lengths are 20cm and 25cm respectively.
B
Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 20cm and 25cm respectively.
C
Device X is a concave lens and device Y is a convex mirror, whose focal lengths are 20cm and 25cm respectively.
D
Device X is a concave lens and device Y is a concave mirror, whose focal lengths are 20cm and 25cm respectively.
Hard
View solution>