Advertisements
Advertisements
प्रश्न
A boy stands 4 m away from the plane mirror. If the boy moves `1/2` m towards the mirror, what is now the distance between the boy and his image? Give a reason for your answer.
Advertisements
उत्तर
Distance of boy from the plane mirror = u = 4 m When boy moves `1/2` m towards the mirror.
Then, distance between boy and mirror = 4 – `1/2` = `7/2` m
We know, in a plane mirror, the image formed is as behind the mirror as the object is in front of it.
So, distance between the mirror and image of boy = `7/2` m
Distance between the boy and his image
= Distance of boy from mirror + Distance of image of boy from mirror.
`= 7/2 + 7/2 = (7 + 7)/2 = 14/2` = 7 m
APPEARS IN
संबंधित प्रश्न
Explain the following term :
Plane mirror
Draw diagram/diagrams to show them.
Why is it difficult to read the image of the text of a page formed due to reflection by a plane mirror?
An optician while testing the eyes of a patient keeps a chart of letters 3 m behind the patient and asks him to see the letters on the image of chart formed in a plane mirror kept at distance 2 m in front of him. At what distance is the chart seen by the patient?
Two plane mirrors are arranged parallel and facing each other at some separation. How many images are formed for a point object kept in between them? Show the formation of images with the help of a ray diagram
State two uses of a plane mirror.
(a) What do you understand by the term lateral inversion?
(b) A printed card has letters PHYSICS. By drawing the diagram show the appearance of the letters. (No ray diagram is required).
Draw a neat two ray diagram for the formation of images in two plane mirrors, when mirrors are at facing each other.
Select the correct option:
A ray of light is incident on a concave mirror. If it is parallel to principal axis, the reflected ray will:
Select the correct option:
If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will:
