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Parallel beam of light is incident on th...

Parallel beam of light is incident on ths syetem of two convex lenses of focal lengths `f_(1) = 20 cm` and `f_(2) = 10 cm`. What should be the distance between the two lenses so that rays after refraction from both the lenses pass undeviated

A

60cm

B

30cm

C

90cm

D

40cm

Text Solution

Verified by Experts

The correct Answer is:
b.
As shown figure . The distance between the lenses should be 30cm.
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