A ray of light in passing from a transparent medium 1 to another transparent medium 2 speeds up. In this case, state whether the refractive index of medium 2 is $-$ the refractive index of medium 1.

greater than

No worries! We‘ve got your back. Try BYJU‘S free classes today!

equal to

No worries! We‘ve got your back. Try BYJU‘S free classes today!

less than

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

none of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D less than
According to Snell's Law: $\frac{s i n θ_{1}}{s i n θ_{2}}$ = $\frac{v_{1}}{v_{2}}$ = $\frac{n_{2}}{n_{1}}$
This means $n_{1} v_{1} = n_{2} v_{2}$
If speed of light travelling from from medium 1 to 2 increases, then refractive index of medium 2 is less than that of medium 1.

Suggest Corrections

Similar questions

A light ray in passing from water to a medium (a) speeds up, (b) slows down. In each case, (i) give one example of the medium, (ii) state whether the refractive index of medium is equal to, less than or greater than the refractive index of water.

Q. A light wave travelling in a transparent homogeneous medium enters another transparent homogeneous medium of higher refractive index. The speed of light in the second medium ________.

Q. Why is refractive index in a transparent medium greater than one?

1.The speed of light in a transparent medium is 1.8×10^8m/s. Find the refractive index of that medium.

Q. When a light ray moves from air to a transparent medium the angle of incidence and the angle of refraction are

45^{\circ}

and

30^{\circ}

respectively. Find the refractive index of this medium is

Join BYJU'S Learning Program

A ray of light in passing from a transparent medium 1 to another transparent medium 2 speeds up. In this case, state whether the refractive index of medium 2 is – the refractive index of medium 1.

The correct option is D less thanAccording to Snell's Law: sinθ1sinθ2=v1v2=n2n1This means n1v1=n2v2If speed of light travelling from from medium 1 to 2 increases, then refractive index of medium 2 is less than that of medium 1.

A ray of light in passing from a transparent medium 1 to another transparent medium 2 speeds up. In this case, state whether the refractive index of medium 2 is $-$ the refractive index of medium 1.