A green light is incident from the water to t | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The critical angle $	heta_c$ is given by $\sin 	heta_c = \frac{1}{\mu}$.According to Cauchy's equation,the refractive index $\mu$ decreases as t

Vedclass · Accepted Answer

The spectrum of visible light whose frequency is less than that of green light will come out to the air medium.

Vedclass · Answer

(A) The critical angle $	heta_c$ is given by $\sin 	heta_c = \frac{1}{\mu}$.According to Cauchy's equation,the refractive index $\mu$ decreases as the wavelength $\lambda$ increases,meaning $\mu$ increases as frequency $f$ increases.For green light,the incident angle is $	heta_c$. If the frequency is less than that of green light,the wavelength is greater,so the refractive index $\mu$ is smaller. Consequently,the critical angle $	heta_c = \arcsin(1/\mu)$ becomes larger than the incident angle $	heta$. Since the incident angle is now less than the critical angle,these light components will refract into the air.If the frequency is greater than that of green light,the wavelength is smaller,so the refractive index $\mu$ is larger. Consequently,the critical angle $	heta_c$ becomes smaller than the incident angle $	heta$. Since the incident angle is now greater than the critical angle,these light components will undergo total internal reflection.

$A$ green light is incident from the water to the air-water interface at the critical angle $(\theta)$. Select the correct statement.

Similar Questions

Critical angle of incidence for a pair of optical media is $45^{\circ}$. The refractive indices of the first and second media are in the ratio:

The refractive index of glass is $1.5$ and that of water is $1.33$. The critical angle for a ray of light going from glass to water is

$A$ ray of light incident normally on an isosceles right-angled prism travels as shown in the figure. The least value of the refractive index of the prism must be

Calculate the critical angle for a glass-air surface,if a ray of light incident in air on the glass surface is deviated by $15^{\circ}$ when the angle of incidence is $45^{\circ}$. (in $^{\circ}$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module