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A parallel beam of monochromatic light f...

A parallel beam of monochromatic light falls on a combination of a convex lens and a concave lens of focal lengths 15 cm and 5 cm respectively. What is the distance between the two lenses to obtain a parallel beam of light from the concave lens ?

A

20cm

B

3cm

C

10cm

D

45cm

Text Solution

Verified by Experts

The correct Answer is:
C
`d=f_(1)~f_(2)`
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