Tag: reflection of light and shadow

Quizzes (17) Questions (85)

Questions Related to reflection of light and shadow

Multiple choice physics reflection of light and shadow regular and irregular reflection regular and diffused reflection laws of reflection

The change in reflected wave, when light wave suffers reflection at the interface from air to glass is?

  1. $0$
  2. $\dfrac{\pi}{2}$
  3. $\pi$
  4. $2\pi$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
When light wave suffers reflection at the interface from air to glass, the change in phase of the reflected wave is equal to π
Hence the option C is the right answer
Multiple choice physics reflection of light and shadow regular and irregular reflection regular and diffused reflection laws of reflection

The reflection taking place from the walls of a building is called:

  1. regular reflection

  2. diffused reflection

  3. multiple reflection

  4. internal reflection
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The reflection taking place from the walls of a building is called diffused reflection.
In diffused reflection, the reflected rays are not parallel to each other. This kind of reflection occurs from a coarse surface. Walls of a building being coarse surfaces, give rise to diffused reflections.

Multiple choice physics reflection of light and shadow terms related with reflection terms related to reflection of light laws of reflection

Who amongst the following used corpuscular theory to explain reflection and refraction of light ?

  1. Newton

  2. Maxwell

  3. Young

  4. Hertz
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Newton used corpuscular theory to explain reflection and refraction of light. According to Sir Isaac Newton's Corpuscular Theory a luminous body continuously emits tiny, light and elastic particles called corpuscles in all directions. When these particles fall on the retina of the eye, they produce the sensation of vision.


This theory could explain a number of phenomena concerning light like rectilinear propagation, reflection and refraction. Reflection was explained by assuming that the corpuscles which fall on a smooth surface would bounce back like rubber balls hitting a wall. When this theory was used to explain refraction scientists found that the velocity of light in a denser medium would be more than that in a rarer medium.

Multiple choice physics reflection of light and shadow terms related with reflection terms related to reflection of light laws of reflection

A perpendicular drawn at the point of incidence of a light ray on the surface of a mirror is called -

  1. incident ray

  2. reflected ray

  3. normal

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Normal is perpendicular drawn to the surface at the point of incidence so that angle between incident ray and normal is angle of incidence.

Multiple choice physics reflection of light and shadow terms related with reflection terms related to reflection of light laws of reflection

When light moving in one medium falls at the surface of another medium, _______ light returns back to the same medium.

  1. all of

  2. a part of

  3. no

  4. either all or no

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Light moving in one medium when falls at the surface of another medium, part of light returns to the same medium. Some part is transmitted and the rest is absorbed.  No material is a perfect reflector. Almost all surfaces absorb some part of light.