Question

Assertion: Convex mirrors are used as reflectors in street lamps.
Reason: Convex mirrors are diverging mirrors and hence helping the light to spread over a larger area.

• A. Both assertion and reason are true and the reason is not the correct explanation of the assertion.
• B. Both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. Assertion is a true statement but the reason is false.
• D. Both assertion and reason are false statements.

Answer 1

The correct option is B Both assertion and reason are true and the reason is the correct explanation of the assertion.

Mirror whose reflecting surface is curved outward is known as a convex mirror.
A beam of light falling on a convex mirror diverges after reflection, hence they are called diverging mirrors.
This property of divergence of a beam of light after reflection is used as reflectors in street lamps to spread light over a large area.