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The refractive index of a lens material ...

The refractive index of a lens material is 1.5 and focal length f. Due to some chemical changes in the material, its refractive index has increased by 2%. The percentage change in its focal length is

A

`+4.5%`

B

`-4.5%`

C

`+5.67%`

D

`-5.67%`

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-GEOMETRICAL OPTICS-ADDITIONAL PRACTICE EXERCISE (LEVEL-I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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