Question

ii.Study the table given below and state the medium in which light ray will travel fastest. Why?
Medium A B C
Refractive Index 1.33 1.5 2.4​

Answer 1

Answer:

light ray will travel fast in medium A

Since, refractive Index of medium A is lowest among other medium

Answer 2

Answer:

Medium A

Explanation:

Correct option is A)

We know that μ=

v

c

= refractive index of medium

where c is the speed of light in air and v is the speed of light in that medium

⟹v=

μ

c

thus, velocity in medium is inversely proportional to refractive index of medium,

this gives, smallest refractive index will give maximum speed

For short:

Refractive index of medium A is lowest so it travels the faster

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