Image Formation by a Plane Mirror

Q. Explain the working of a periscope.

Q.

A plane mirror is approaching you at $10cm{s}^{-1}$. Your image shall approach you with a speed of:

1. $10cm{s}^{-1}$
2. $20cm{s}^{-1}$
3. $40cm{s}^{-1}$
4. $5cm{s}^{-1}$

Q. Two plane mirrors are placed parallel to each other as shown in the figure There is anplaced between the mirrors, at 10 cm from mirror M2 What are the distances of firstformed by M, from A#3two imagesM, 10 c20cm(2) 10 cm, 10 cm(4) 10 cm. 20 cm(1) 5 cm, 30 cm(3) 10 cm, 30 cm

Q.

Can the image formed by a plane mirror be projected onto a screen

Can you please check my answer

Ans: no the image formed by the plane mirror can't be projected on the screen as a plane mirror forms a virtual image and a virtual image can be obtained on the screen

Q. What is multiple reflection and how is image formed in it?

Q. A boy moves with the speed of 10m/s towards the stationary plane mirror and the boy see his image in the plane mirror the speed at which image of the boy appear to approach the boy is found to be 10km/s. What is the value of k

Q.

Question 16

Look at the figure. Can the image of the child in it be obtained on a screen?

Q.

What is meant by vertical inversion?

Q.

Which amongst the following is not a characteristic of an image formed by a plane mirror?

1. Laterally inverted
2. Erect
3. Virtual
4. Diminished

Q. Find the number of images formed when a candle is placed between two mirrors inclined at an angle of ${60}^0$.

1. 5

Q.

Name the following:

An instrument used by submarines to observe objects above the surface of the water.

Q. What is the angle of incidence when a ray is incident normally on a plane mirror?

1. 45 degrees
2. 30 degrees
3. 0 degree
4. 90 degrees

Q.

Once I suddenly woke up in bed and, by mistake, saw the image of my clock in a plane mirror and panicked that I was late. The time it showed was8:45. (The clock did not have numbers on it). The correct time was -

1. 2:45

2. 3:15

3. 3:45

4. 4:15

Q. A light ray is incident perpendicular to the plane mirror. What is the angle of incidence and the angle of reflection respectively?

1. 90°; 180°
2. 0°; 180°
3. 0°; 0°
4. 0°; 90°

Q.

Question 11

How many times is a ray of light reflected by two plane mirrors placed parallel and facing each other?

Q. A candle of height 10 cm is kept 5 cm away from a plane mirror. What would be the height of the image?

1. 5 cm
2. 15 cm
3. 0 cm
4. 10 cm

Q. Read the given statements and select the correct option.

Statement 1: Parallel rays are incident on a surface but the reflected rays are not parallel. This type of reflection is called diffused reflection.
Statement 2: Diffused reflection occurs due to the failure of the laws of reflection.

1. Both statements 1 and 2 are false.
2. Both statements 1 and 2 are true, but statement 2 is not the correct explanation of statement 1.
3. Both statements 1 and 2 are true, and statement 2 is the correct explanation of statement 1.
4. Statement 1 is true, but statement 2 is false.

Q. Identify the phenomenon common to the following pictures.

1. 
2. 
3. 
4. 

Q. A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror.


At which point should the eye be placed, so that the hole can be seen?

1. A
2. B
3. C
4. D

Q.

Light rays can be reflected multiple times.This principle is used in the which of the following instrument?

1. Telescope

2. Periscope

3. Microscope

4. Gyroscope

Q. The image formed by a plane mirror is:

1. Virtual and erect
2. Virtual and inverted
3. Real and erect
4. Real and inverted

Q. A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure. The pencil of light coming out of the hole falls on a mirror.


At which point should the eye be placed, so that the hole can be seen?

1. A
2. B
3. C
4. D

Q. Which of these formulae correctly depicts the relationship between the angle between two plane mirrors and the number of images that will be formed within them if an object is placed between them?

Q. Is the image formed by a plane mirror real or virtual? Write an instance when such a mirror gives an inverted image.

Q. Two plane mirrors; $M_1$ and $M_2$ are inclined to each other at 60°. A ray parallel to the horizontal mirror $M_2$ strikes $M_1$ and after reflecting, strikes $M_2$ where it gets reflected again. Find the final angle of reflection after the ray strikes $M_2$.

1. 60°
2. 0°
3. 90°
4. 30°

Q. What is the angle of incidence when a ray is incident normally on a plane mirror?

1. 45 degrees
2. 30 degrees
3. 90 degrees
4. 0 degree

Q. What is the angle of incidence when a ray is incident normally on a plane mirror?

1. 30 degrees
2. 45 degrees
3. 0 degree
4. 90 degrees