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

Irregular reflection occurs due to:

  1. failure of laws of reflection

  2. irregularity in reflecting surface

  3. irregular light

  4. all of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Irregular reflection occurs when parallel rays of light are incident on an irregular or rough surface and after reflection emerge in different directions. This type of reflection occurs due to irregularity of the reflecting surface.

Regular reflections occur from smooth or polished surfaces.

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

When all the parallel rays reflected from a plane surface are parallel, the reflection is known as:

  1. regular reflection

  2. irregular reflection

  3. diffused reflection

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

When all the parallel rays reflected from a plane surface are parallel, the reflection is known as regular reflection .

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

Mark the statement which is true for diffused reflection:

  1. Diffused reflection is due to failure of laws of reflection

  2. It is caused due to irregularities in the reflecting surface

  3. When the incident light is diffused in nature it causes diffused reflection

  4. All are true
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diffused reflection is not due to failure of laws of reflection but it is due to irregularities in the reflecting surface, like that of cardboard.

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

Why we are not able to see our image on a cardboard even though it reflects light?

  1. Because cardboard does not shine like mirror

  2. Because cardboard is not as durable as mirror

  3. Because cardboard's surface is irregular

  4. All
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We can"t see our image on a cardboard because cardboard"s surface is rough and the reflection occurring on uneven surface is irregular reflection. So, the rays, after reflection, move to different directions. Images are not formed due to irregular reflections.

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

A bus driver is reversing his bus at a speed $8 m s^{-1}$. The rear view mirror of a bus is a plane mirror. The driver sees in his rear view mirror the image of a car parked behind his bus. The speed at which the image of the car appears to approach the driver will be

  1. $2 m s^{-1}$
  2. $4 m s^{-1}$
  3. $8 m s^{-1}$
  4. $16 m s^{-1}$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The speed at which the image of the car appears to approach the driver will be $(2 \times 8) m s^{-1} = 16 m s^{-1}$ because rear view mirror is a plane mirror.