1.5 Speed of light through refractive glass 2 × 10⁸ m / s. If the refractive index of water is 4/3, what is the velocity of light in water?
Answers
Correct question :-
If the refractive index of water is 4/3, what is the velocity of light in water.
Answer :-
Velocity of light in water is 2.25 × 10⁸ m/s .
Explanation :-
We have :-
→ Refractive index of water = 4/3
→ Velocity of light in vaccum = 3 × 10⁸ m/s
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We know that :-
n = c/v
Where :-
• n is the refractive index of the medium.
• c is velocity of light in vaccum.
• v is velocity of light in given medium.
Substituting values, we get :-
⇒ 4/3 = (3 × 10⁸)/v
⇒ 4(v) = 3(3 × 10⁸)
⇒ 4v = 9 × 10⁸
⇒ v = 9 × 10⁸/4
⇒ v = 2.25 × 10⁸ m/s
Correct question :-
If the refractive index of water is 4/3, what is the velocity of light in water.
Answer :-
Velocity of light in water is 2.25 × 10⁸ m/s .
Explanation :-
We have :-
→ Refractive index of water = 4/3
→ Velocity of light in vaccum = 3 × 10⁸ m/s
________________________________
We know that :-
n = c/v
Where :-
• n is the refractive index of the medium.
• c is velocity of light in vaccum.
• v is velocity of light in given medium.
Substituting values, we get :-
⇒ 4/3 = (3 × 10⁸)/v
⇒ 4(v) = 3(3 × 10⁸)
⇒ 4v = 9 × 10⁸
⇒ v = 9 × 10⁸/4
⇒ v = 2.25 × 10⁸ m/s