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Two lenses having f(1):f(2)=2:3 has comb...

Two lenses having `f_(1):f_(2)=2:3` has combination to make no dispersion. Find the ratio of dispersive power of glasses used

A

`2:3`

B

`3:2`

C

`4:9`

D

`9:4`

Text Solution

Verified by Experts

The correct Answer is:
A
`(omega_(1))/(omega_(2))=-(f_(1))/(f_(2))=-(2)/(3).`
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