Tag: formation of image in a plane mirror

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Questions Related to formation of image in a plane mirror

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

In a plane mirror, the image is as far behind the mirror as the object is in front of it. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The distance of image from the mirror is distance of image formed behind the plane mirror.

The given statement is $true$

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

State whether the following statement is True or False?
The size of the image produced by plane mirror is the same as that of the objects. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The image formed by a plane mirror is always virtual (meaning that the light rays do not actually come from the image), upright, and of the same shape and size as the object it is reflecting. A virtual image is a copy of an object formed at the location from which the light rays appear to come.
Hence, the statement is true.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

Choose the incorrect statement related to the image formed by a plane mirror:

  1. a plane mirror always forms a virtual image

  2. the image formed by a plane mirror may be magnified or diminished

  3. the image formed by a plane mirror is always unmagnified and laterally inverted

  4. the image formed by a plane mirror is always unmagnified and erect
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

As the image formed by a plane mirror is always virtual,upright, and of the same shape and size as the object it is reflecting.
Hence, option B is incorrect statement.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

When the angle between two plane mirrors is $\displaystyle { 60 }^{ o }$, how many multiple images will be formed by the mirrors?

  1. $6$
  2. $7$
  3. $4$
  4. $5$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Number of images will be given by,

 
                  =$\dfrac{360}{\theta} -1$


given,  $\theta=60$

               $\therefore$    Number of images will be 5.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

When a divergent beam of light is incident on a plane mirror, the image formed is

  1. Upright and real

  2. Upright and virtual

  3. Inverted and virtual

  4. Inverted and real
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It should be remembered that plane mirror always form virtual and errect image and that too of same but laterally inverted.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

An object is placed at a distance of $0.25m$ in front of a plane mirror. The distance between the object and the image is:

  1. $0.5m$
  2. $1m$
  3. $0.25m$
  4. $0.75m$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

For reflection from a plane mirror, distance between object and mirror $=$ distance between mirror and the image$=0.25m$

So, distance between object and image$=$ (distance between object and mirror) $+$ (distance between mirror and image) $=(0.25+0.25)m=0.5m$

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

If $x _1$ be the size of the magnified image and $x _2$ the size of the diminished image in Lens Displacement Method, then the size of the object is

  1. $\sqrt{x _1x _2}$
  2. $x _1x _2$
  3. $x _1^2x _2$
  4. $x _1x^2 _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The size of the object in accordance with the Fresnel's displacement law is given by $\sqrt{x _1x _2}$.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

If a mirror forms a virtual image of a real object then

  1. it must be a convex mirror.

  2. it must be concave mirror.

  3. it must be a plane mirror.

  4. it may be any of the mirrors mentioned above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A mirror that forms a virtual image of a real object is :
(a) Concave mirror: When object is placed only between pole and focus of the mirror.
(b) Convex mirror: For all positions of objects, image is virtual.
(c) Plane mirror: Image formed is virtual.

Multiple choice evs reflection of light by plane surfaces characteristics of an image formed by a plane mirror formation of image in a plane mirror characteristics of the image formed by a plane mirror

Amount of light reflected depends upon

  1. Nature of material of the object

  2. Nature of the surface

  3. Smoothness of the surface

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Amount of light reflected depends upon nature of material of the object, nature of the surface and smoothness of the surface. If the material is opaque for an incident light, then the total amount of incident light gets reflected. Otherwise, a part of the incident light can get transmitted.  If the surface is smooth, the reflection is more, otherwise reflected light can get scattered.