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 lateral inversion right or left reflection at plane surface

Mark correct option.

  1. The laws of reflection of light hold only for plane surfaces

  2. The size of virtual image can be measured by receiving it on screen

  3. Plane mirror alongs form an erect image

  4. Plane mirror may form inverted image
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let solve it by each option

  1. Law of reflection of light holds good for all the mirrors irrespective of their shape and size, hence option A is false
  2.  A virtual image cannot be caught on screen so we cannot measure the size, it is also a false statement
  3. Plane mirror always forms a virtual image, hence it's a false statement
  4. Light rays  which comes from the object  get reflected from plane mirror and reaches to human eye, at this point human feel that reflected ray is coming from the mirror . This is the reason why object looks laterally inverted
  5. Hence option D is the right answer

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

You are given four sources of light each one providing a light of a single colour red, blue, green and yellow. Suppose the angle of refraction for a beam of yellow light corresponding to a particular angle of incidence at the interface of two media is 90. Which of the following statements is correct, if the source of yellow light is replaced with that of other lights without changing the angle of incidence?

  1. The beam of red light would undergo total internal reflection.

  2. The beam of red light would bend towards normal while it gets refracted through the second medium.

  3. The beam of blue light would undergo total internal reflection.

  4. The beam of green light would bend away from the normal as it gets refracted through the second medium.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For yellow light, r=90$^{\circ}$, when $i=c$ since $i$ is kept $c$ should be smaller for total reflection

$\mu = \cfrac{1}{\sin{c}}$ 
If $c$ is small, $\mu$ will be large.
$\therefore c $ will be smallest for this colour.
Hence, blue colour will undergo total internal reflection.

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

Regular reflection takes place when light is incident on:

  1. a rough curved surface

  2. a highly polished plane surface

  3. either of A and B

  4. neither of A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When parallel rays of light are incident on a highly polished plane surface, after reflection, the rays emerge parallel as well. This type of reflection is called regular reflection.

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

Type of reflection in which images are formed and reflection occurs from a smooth surface like that of mirror is known as: 

  1. diffused reflection

  2. regular reflection

  3. irregular reflection

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

Regular reflection occurs from smooth surfaces and images are formed in this type of reflection.