Bissoy.com
Doctors Medicines MCQs Q&A

A ray of light travels from a medium of refractive index m1 to a medium of refractive index m2. If “i” and “r” are the angle of incidence and refraction, then what is sin(i)/sin(r)?

A ray of light travels from a medium of refractive index m1 to a medium of refractive index m2. If “i” and “r” are the angle of incidence and refraction, then what is sin(i)/sin(r)? Correct Answer m21

By Snell’s law: m1*sin(i) = m2*sin(r) => sin(i)/sin(r) = m2/m1 = m21 therefore, sin(i)/sin(r) = m21.

Related Questions

A ray of light travels from air to water as shown below. What are ray PQ and ray PR?   Ray PQ Ray PR (A) Reflected ray Refracted ray (B) Reflected ray Reflected ray (C) Refracted ray Refracted ray (D) Refracted ray Reflected ray
Choose the correct relation for a combination of two prisms to be achromatic. (Where for the first prism: μv = refractive index of the medium in violet light, μr = refractive index of the medium in red light A = angle of the prism; For the second prism: μ′v = refractive index of the medium in violet light, μ′r = refractive index of the medium in red light, A’ = angle of prism.)
There are two medium L1 and L2 of refractive index n1 and n2 respectively (n2  > n1 > 1). In which of the following condition the total internal reflection may occur: a) When the light travel from medium L1 to medium L2. b) When the light travels from medium L2 to medium L1. c) When the light travel from medium L1 to air. d) When the light travels from air to medium L2. Which of the following statement is correct?
Consider the following statement: A ray of light passing through the optical centre of a convex lens emerges without any deviation after refraction. A ray of light passing through the first principal focus of a convex lens  emerges parallel to the principal axis after refraction. A ray of light passing through the optical centre of a convex lens emerges parallel to the principal axis after refraction. Which one of the following statements INCORRECT?
Consider the following statements. i) For a perfect reflection, the angle of incidence will be equal to the angle of reflection. ii) The critical angle is the angle of incidence in the denser medium for which the angle of refraction in the rarer medium is 90°. Which of the above statements are true?
Consider the following statements about visible light, UV light and X-ray.
1. The wavelength of visible light is more than that of X-ray.
2. The energy of X-ray photons is higher than that of UV light photons.
3. The energy of UV light photons is less than that of visible light photons.
Which of the statement(s) given above is/are correct?
The refractive index of a parallel glass slab is 1.57. A light, from medium Y, is incident on the glass slab. If the angle of incidence is 37°, then the angle of emergence, when the light emerges back to medium Y, is ____
Which of the following statement(s) is/are CORRECT for the critical angle? I. Refractive angle is 90o. II. Light ray goes from rarer to denser medium. III. Light ray goes from denser to rarer medium.
Which of the following statement(s) is/ are correct for critical angle?
1. Refractive angle is 90°.
2. Light ray goes from rarer to denser medium.
3. Light ray goes from denser to rarer medium.
An incident ray strikes a plane mirror at an angle of incidence of 50°. What is the decrease in the angle of reflection, if the incident ray moves to angle of incidence of 30°?