Question

Which type of lens is (a) a converging lens, and which is (b) a diverging lens? Explain your answer with diagrams.

Answer 1

Answer:

convex lens is converging lens.and concave lens is diverging lens

Answer 2

Explanation:

(a) Convex lens are converging lens:

• When rays of lights parallel to each other as well as the principal axis comes from infinity passes through the convex lens, then they converges after passing through the lens following the law of refraction.
• The incident rays passes through the lens which as a result gets refracted and meet at a point F i.e., focus on other side i.e., the right side of the lens. This proves that the convex lens is converging lens.

(b) Concave lens are diverging lens:

• When rays of lights parallel to each other as well as the principal axis comes from infinity passes through the concave lens, then they diverges back after passing through the lens following the law of refraction.
• The incident rays passes through the lens which as a result gets refracted and meet at the point F i.e., focus on the left side of the lens. This proves that the concave lens is diverging lens as it diverges the parallel rays that come from infinity.