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Wavelength of light used in an optical i...

Wavelength of light used in an optical instrument are `lambda_(1)=400 Å ` and `lambda_(2)=5000 Å`, then ratio of their respective resolving power (corresponding to `lambda_(1)` and `lambda_(2))` is

A

`16 :25`

B

`9 : 1 `

C

` 4 : 5`

D

` 5 : 4`

Text Solution

Verified by Experts

The correct Answer is:
D
`R.P prop (1)/(lambda) rArr ((R.P)_(1))/((R.P)_(2)) = (lambda_(2))/(lambda_(1)) = (5)/(4)`
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