Question

4 انڈیکس آف ر فریشن کا انحصار کس پر ہوتا ہے:
4. The index of refraction depends on:
Body distance
image distance
speed of light
Focal length
D
C
B
A
جسم کے فاصلے پر
ان کے فاصلہ پر
روشنی کی سپیڈ پر
توكل لمینگتھ پر​

Answer 1

d is the correct answer ngzyjxyk

Answer 2

Answer:

Materials with a high index of refraction will have a shorter focal length than those with lower refractive indices. For example, lenses made of synthetic polymers, such as Lucite (refractive index of 1.47), have a lower refractive index than glass (1.51) leading to a slightly longer focal length.