Question

An object is kept at infinity from a concave lens of focal length 20 cm. What is the image distance?
(a) 10 cm
(b) 15 cm
(c) 20 cm
(d) Infinity

Answer 1

Explanation:

An object is kept at infinity from a concave lens of focal length 20 cm. What is the image distance?

(a) 10 cm

(b) 15 cm

(c) 20 cm

(d) Infinity✓✓✓✓✓

Answer 2

Explanation:

An object is kept at infinity from a concave lens of focal length 20 cm. What is the image distance?

(a) 10 cm

(b) 15 cm

(c) 20 cm

(d) Infinity✔️✔️