Question

Question 7
Convex lens of focal length f made of glass of Refractive index 1.5 is immersed in
water of Refractive index 4/3. Focal length is
a. f
b. greater than f
c. less than f
d. -f​

Answer 1

Answer:

Focal length of lens is greater than medium of refractive index 4 / 3

so ;

focal length will be F only .

option A