Study the given ray diagrams and select the correct statement fro… - Vidyadip

MCQ

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 20 cm and 25 cm respectively.
B
Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 10 cm and 25 cm respectively.
C
Device X is a concave lens and device Y is a convex mirror, whose focal lengths are 20 cm and 25 cm respectively.
D
Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 20 cm and 25 cm respectively.

✓

Answer

Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 20 cm and 25 cm respectively.

Explanation:

From the given figures we can conclude that the device X is a convex lens as it converges the rays and the device Y is a concave mirror as it also converges the rays but in the same side of the mirror .Their focal lengths are 20 cm and 25 cm respectively Regards.

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