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The dispersive power of the material of ...

The dispersive power of the material of lens of focal length 20 cm is 0.08. The longitudinal chromatic aberration of the lens is :

A

A)`0.08 cm `

B

B)`0.08//20 cm`

C

C)`0.016 cm`

D

D)`1.6 cm`

Text Solution

Verified by Experts

The correct Answer is:
D
Longitudinal chromatic aberration
= dispersive power `xx` focal length
`= 0.08 xx 20 = 1.6 cm`
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