Question

what should be the answer to this question? ​

Answer 1

★ Required Answer:-

Option (3) and (4) are correct

_______________________________________

★ Explanation:-

Refractive index, $\sf\dfrac{\sin i}{\sin r}$ is defined as the speed of light in medium 2 divided by speed of light in medium 1.

Here in the given expression ( option 4):

• Speed of light in medium 2 is V2.

• Speed of light in medium 1 is V1.

_______________________________________

Refractive index of medium can also be defined as the refractive index of medium 1 divide by refractive index of medium 2.

Here in the given expression ( option 3):

• Refractive index of medium 2 is n2.

• Refractive index of medium 1 is n1.

As $\sf\dfrac{\sin i}{\sin r}$ is reciprocated to $\sf\dfrac{\sin r}{\sin i}$ it will also result in reciprocation of refractive indexes of mediums.

_______________________________________

★ Additional Information:

What is refraction?

The ability of light to bend when it travels from one medium to another is called refraction of light.

What  are laws of refraction?

There are 2 laws of refraction:

• According to first law incident ray, refracted ray and normal will all lie on the same plane.

• According to 2nd law of refraction, sine of angle of incidence divide by sine of angle of refraction will remain constant for a given pair of medium.

$\boxed{\sf\dfrac{\sin i}{\sin r}=Constant}$

_______________________________________

Answer 2

Answer:

hiii can we talk ,u free enough