The critical angle for light going from medium ' x' to medium ' y ' is ' θ '. The speed of light in medium ' x ' is ' vx '. The speed of light in medium ' y ' is (a) (vx)/(tan θ) (b) vx sin θ (c) vx tan θ (d) (vx)/(sin θ)

Answer: (d). sin θ = (μy)/(μx) = (vx)/(vy). vy = (vx)/(sin θ) So the answer is (d).

The critical angle for light going from medium ' x' to medium ' y '… | MHT CET 2019 (2 May, Shift 2)

Q41MHT CET 2019 · 2 MAY · SHIFT 2Easy

Total Internal Reflection

The critical angle for light going from medium ' $x'$ to medium ' $y$ ' is ' $\theta$ '. The speed of light in medium ' $x$ ' is ' $v_x$ '. The speed of light in medium ' $y$ ' is

Show answer and solution

Answer: (d)

$\sin\theta = \frac{\mu_y}{\mu_x} = \frac{v_x}{v_y}$ .
$v_y = \frac{v_x}{\sin\theta}$
So the answer is (d).

Report a mistake

More questions on Total Internal Reflection

In total internal reflection when the angle of incidence is equal to the critical angle…NEET 2019
Glass has refractive index μ with respect to air and the critical angle for a ray of…MHT CET 2019 (3 May, Shift 1)
A transparent cube of side, made of a material of refractive index μ 2, is immersed in a…JEE Main 2019 (12 Apr, Shift 2)
In figure, the optical fiber is l = 2m long and has a diameter of d = 20 μm. If a ray of…JEE Main 2019 (8 Apr, Shift 1)
Let the refractive index of a denser medium with respect to a rarer medium be n12 and its…JEE Main 2017 (8 Apr, Shift 1)
A beam of light consisting of red, green and blue colours is incident on a right angled…NEET 2015 (AIPMT)
A green light is incident from the water to the air - water interface at the critical…JEE Main 2014
A diver looking up through the water sees the outside world contained in a circular…JEE Main 2014 (9 Apr, Shift 1)

Total Internal Reflection question from MHT CET 2019 (2 May, Shift 2)

More questions on Total Internal Reflection