Question

When wavelength of light used in optical instruments A and B are 4500 Å and 6000 Å respectively, the ratio of resolving power of A to B will be ______.

Options

• 7 : 1

• 16 : 9

• 4 : 3

• 9 : 16

Answer 1

When wavelength of light used in optical instruments A and B are 4500 Å and 6000 Å respectively, the ratio of resolving power of A to B will be 4 : 3.

Explanation:

R.P. ∝ `1/lambda`

`("R.P."_"A")/("R.P."_"B")=lambda_"B"/lambda_"A"=6000/4500=60/45=12/3=4/3`