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Priya123
@priya123
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Joined: May 7, 2021
Last seen: Jul 27, 2023
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Topics: 2064 / Replies: 139
AllTopicsReplies
Topic
Get a plane mirror of a suitable size. Place it in a bowl (katori) as shown in Fig., Fill the bowl with water.
4 years ago
Forum
Light
Replies: 0
Views: 84
Topic
To make a kaleidoscope, get three rectangular mirror strips each about 15 cm long and 4 cm wide. Join them together to form a prism as shown in Fig.(a).
4 years ago
Forum
Light
Replies: 0
Views: 182
Topic
Take two plane mirrors. Set them at right angles to each other with their edges touching (Fig.). To hinge them you can use adhesive tape.
4 years ago
Forum
Light
Replies: 0
Views: 133
Topic
Imagine that parallel rays are incident on an irregular surface as shown in Fig. Remember that the laws of reflection are valid at each point of the surface.
4 years ago
Forum
Light
Replies: 0
Views: 89
Topic
A source of light O is placed in front of a plane mirror PQ. Two rays OA and OC are incident on it (Fig.). Can you find out the direction of the reflected rays?
4 years ago
Forum
Light
Replies: 0
Views: 147
Topic
Perform Activity again. This time use a sheet of stiff paper or a chart paper. Let the sheet project a little beyond the edge of Table Fig.
4 years ago
Forum
Light
Replies: 0
Views: 101
Topic
Fix a white sheet of paper on a drawing board or a table. Take a comb and close all its openings except one in the middle. You can use a strip of black paper for this purpose.
4 years ago
Forum
Light
Replies: 0
Views: 130
Topic
Find out the position of the image of an object situated at A in the plane mirror Fig. (b) Can Paheli at B see this image?
4 years ago
Forum
Light
Replies: 0
Views: 75
Topic
Boojho stands at A just on the side of a plane mirror as shown in Fig. Can he see himself in the mirror? Also, can he see the image of objects situated at P, Q, and R?
4 years ago
Forum
Light
Replies: 0
Views: 82
Topic
Two mirrors meet at right angles. A ray of light is incident on one at an angle of 30° as shown in Fig. Draw the reflected ray from the second mirror.
4 years ago
Forum
Light
Replies: 0
Views: 80
Topic
How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm?
4 years ago
Forum
Light
Replies: 0
Views: 80
Topic
What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?
4 years ago
Forum
Light
Replies: 0
Views: 71
Topic
Explain how you can take care of your eyes.
4 years ago
Forum
Light
Replies: 0
Views: 63
Topic
Gurmit wanted to perform Activity using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher's advise?
4 years ago
Forum
Light
Replies: 0
Views: 73
Topic
Draw a labelled sketch of the human eye.
4 years ago
Forum
Light
Replies: 0
Views: 352
Topic
Describe the construction of a kaleidoscope.
4 years ago
Forum
Light
Replies: 0
Views: 338
Topic
Image formed by a plane mirror is:
4 years ago
Forum
Light
Replies: 0
Views: 89
Topic
The angle of incidence is equal to the angle of reflection
4 years ago
Forum
Light
Replies: 0
Views: 68
Topic
A person 1 m in front of a plane mirror seems to be ______ m away from his image.
4 years ago
Forum
Light
Replies: 0
Views: 124
Topic
Describe an activity to show that the incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.
4 years ago
Forum
Light
Replies: 0
Views: 104
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