(D) The light enters face $AB$ normally,so it travels undeviated until it hits the face $AC$. The angle of incidence at face $AC$ is $45^{\circ}$.For

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

(D) The light enters face $AB$ normally,so it travels undeviated until it hits the face $AC$. The angle of incidence at face $AC$ is $45^{\circ}$.For light to emerge from face $AC$,it must not undergo Total Internal Reflection $(TIR)$.Condition for no $TIR$: $\theta $\sin \theta $\Rightarrow \frac{1}{\sqrt{2}} Comparing the given refractive indices:Red: $\mu = 1.39 Green: $\mu = 1.44 > 1.414$ (Undergoes $TIR$)Blue: $\mu = 1.47 > 1.414$ (Undergoes $TIR$)Therefore,only red light will emerge from face $AC$.

Class 12 Physics Ray Optics and Optical Instruments Critical Angle and Total Internal Reflection

Difficult

$A$ beam of light consisting of red,green and blue colours is incident on a right-angled prism on face $AB$. The refractive indices of the material for the above red,green and blue colours are $1.39, 1.44$ and $1.47$ respectively. $A$ person looking on surface $AC$ of the prism will see

A
no light
B
green and blue colours
C
red and green colours
D
red colour only

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Physics Questions

Chapter

Ray Optics and Optical Instruments

Subtopic

Critical Angle and 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.

EasyJEE MAIN 2014

View Solution

$A$ glass prism of refractive index $1.5$ is immersed in water (refractive index $\frac{4}{3}$) as shown in the figure. $A$ light beam incident normally on the face $AB$ is totally internally reflected at the face $AC$ to reach the face $BC$,if:

DifficultAIEEE 2012

View Solution

Two transparent media $A$ and $B$ are separated by a plane boundary. The speed of light in those media are $1.5 \times 10^{8} \ m/s$ and $2.0 \times 10^{8} \ m/s$,respectively. The critical angle for a ray of light for these two media is:

MediumNEET 2022

View Solution

$A$ ray of light is travelling from glass to air. (refractive index of glass $= 1.5$). The angle of incidence is $50^{\circ}$. The deviation of the ray is

MediumKCET 2007

View Solution

Critical angle is that angle of incidence in the denser medium for which the angle of refraction in the rarer medium is......$^o$.

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

$A$ beam of light consisting of red,green and blue colours is incident on a right-angled prism on face $AB$. The refractive indices of the material for the above red,green and blue colours are $1.39, 1.44$ and $1.47$ respectively. $A$ person looking on surface $AC$ of the prism will see

Similar Questions

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

$A$ glass prism of refractive index $1.5$ is immersed in water (refractive index $\frac{4}{3}$) as shown in the figure. $A$ light beam incident normally on the face $AB$ is totally internally reflected at the face $AC$ to reach the face $BC$,if:

Two transparent media $A$ and $B$ are separated by a plane boundary. The speed of light in those media are $1.5 \times 10^{8} \ m/s$ and $2.0 \times 10^{8} \ m/s$,respectively. The critical angle for a ray of light for these two media is:

$A$ ray of light is travelling from glass to air. (refractive index of glass $= 1.5$). The angle of incidence is $50^{\circ}$. The deviation of the ray is

Critical angle is that angle of incidence in the denser medium for which the angle of refraction in the rarer medium is......$^o$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module