Tag: image of an extended object formed by a plane mirror

Quizzes (0) Questions (18)

Questions Related to image of an extended object formed by a plane mirror

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

Formation of erect image is a characteristic of which of the following mirrors ?

  1. Plane Mirror

  2. Concave mirror

  3. Convex mirror

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
$ \bf{Convex\ mirrors} $ always produce a virtual, erect and diminished image and the decrease in size of image depends on the position of the object in front of the mirror.

$ \bf{Plane\ Mirrors} $ always produce a virtual and erect image having the same size as that of the object irrespective of the position of object.

$ \bf{Concave\ mirrors} $ produce real and virtual, erect and inverted, diminished, same-sized and magnified image depending upon the position of the object on the principal axis. The concave mirror forms a virtual and erect image only when the object is placed between the Focus and the pole of the mirror.

Thus, an erect image can be formed by all the three mirrors.

Hence, the correct answer is OPTION D.

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

Choose the correct option regarding the image formed by a plane mirror

  1. It is real

  2. It is erect

  3. It is inverted

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A $ \bf{plane\ mirror} $ always forms an image which is $ \bf{virtual} $ in nature (meaning that light rays meet behind the mirror or that light rays do not actually come from the image), $ \bf{erect} $ and of the $ \bf{same\ shape\ and\ size} $ as that of the object, it is reflecting.

Hence, the correct answer is OPTION B. 

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

Which of the following is a characteristic of the image formed by a plane mirror ?

  1. The image is twice in size as the object.

  2. The image is nearer from the mirror as the object is in front of it.

  3. The image is real

  4. The image is erect
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A $ \bf{plane\ mirror} $ always forms an image which is $ \bf{virtual} $ in nature (meaning that light rays meet behind the mirror or that light rays do not actually come from the image), $ \bf{erect} $ and of the $ \bf{same\ shape\ and\ size} $ as that of the object, it is reflecting. The image in  plane mirror is formed as far behind the mirror as the object in front of it. 

Hence, the correct answer is OPTION D. 

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

On reflection from a rigid body, the wave undergoes a phase change of

  1. $90^{\circ}$
  2. $180^{\circ}$
  3. $210^{\circ}$
  4. $120^{\circ}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When a wave reflects off a rigid boundary (a medium with higher optical density or a fixed end), it undergoes a phase shift of 180 degrees (or pi radians).

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

When you see your reflection in the inner surface of the spoon, choose the correct option regarding the image formed

  1. The image formed will be erect only, it can not be inverted

  2. The image formed will be inverted only, it can not be erect

  3. The image formed can be both erect or inverted depending upon distance of your face and the spoon

  4. The image formed will be real
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Since inner surface of spoon act as concave mirror i.e. erect or diminished or virtual or real with varyaccording to position of object.

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

When a ray of light is incident normally on a plane mirror then the angle of reflection will be?

  1. ${0}^{o}$
  2. ${90}^{o}$
  3. ${180}^{o}$
  4. $-{90}^{o}$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As angle of incidence and angle of reflection is always equal hence angle of reflection should be $0°$ as normal to the plane incidence means $0°$ is the angle of incidence from normal.

Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

A monochromatic ray of light in glass strikes the glass air interference normally. which of the following correct?

  1. The ray is totally reflected into glass

  2. The ray passes into air such that the
    refracted ray bends away from the normal

  3. The ray passes into air undeviated and with an increase in its speed.

  4. The ray passes into air with an increase in its frequency.
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice evs magic with mirrors image of an extended object formed by a plane mirror reflection at plane surface introduction to light and mirror

Two plane mirrors A and B are aligned parallel to each other, as shown in figure. A light ray is incident at an angle $30$ at a point just inside one end of A. The plane of incidence coincides with the plane of the figure.The maximum number of times the ray undergoes reflections ( including the first one) before it emerges out is:

  1. $28$
  2. $30$
  3. $32$
  4. $34$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For two parallel mirrors separated by distance d, the number of reflections is determined by the horizontal distance the ray travels. With an angle of 30 degrees, the ray reflects multiple times until it exits. The standard formula for this geometry results in 30 reflections.