Tag: laws of reflection

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Questions Related to laws of reflection

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

You are able to see in shaded areas, such as under a tree, because light has undergone:

  1. refraction

  2. incident bending

  3. a change in speed

  4. diffused reflection
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a diffused or irregular reflection, parallel rays of light, after striking a rough and curved surface, get reflected irregularly.

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

Which surfaces are said to be smooth?

  1. As long as the irregularities of surfaces are small as compared to the wavelength of the incident light.

  2. As long as surface irregularities are large compared to the wavelength of the incident light.

  3. As long as surface smoothness are small as compared to wavelength of reflected light

  4. As long as the surface irregularities are large as compared to the wavelength of reflected light.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A surface behaves as a smooth surface as long as the surface irregularities are small compared with the wavelength of the incident light.

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.