Advertisements
Advertisements
Question
The inner surface of the reflector of a torch acts as a ______ mirror.
Advertisements
Solution
The inner surface of the reflector of a torch acts as a concave mirror.
Explanation:
The inner surface of the reflector in a torch is curved inward, like a concave mirror. This shape reflects and focuses light from the bulb into a narrow beam, making the light more directed and useful for illumination. A concave mirror converges light rays to a focal point, which is why it’s used in torches to focus the light.
APPEARS IN
RELATED QUESTIONS
Which type of mirror is used in the following?
Periscope
If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be
A rainbow can be seen in the sky
The inner surface of a steel spoon acts as a ______ mirror.
An erect and enlarged image of an object is formed on a screen. Explain how this could be possible.
Two plane mirror M1 & M2 are placed at an angle of 120° shown in figure. A light ray is incident on M1 at an angle of 60°; after reflection from M1 the ray strikes M2. The angle which the final reflected ray (after reflection from M2) is making with the plane of mirror M2 is ______.
A person AB of height 170 cm is standing in front of a vertical plane mirror. His eyes are at height 164 cm from ground. At what distance from P should a hole be made in the mirror so that he cannot see the top of his head?
A plane mirror is moving with velocity `4hati + 5hatj + 8hatk`. A point object in front of the mirror moves with a velocity of `3hati + 4hatj + 5hatk`. Here `hatk` is along the normal to the plane mirror and facing toward the object. The velocity of the image is ______.
Which type of mirror is used in the following?
Kaleidoscope
Role play
Here is a game that a group of children can play. One child will be chosen to act as object and another will act as the image of the object. The object and the image will sit opposite to each other. The object will make movements, such as raising a hand, touching an ear etc. The image will have to make the correct movement following the movement of the object. The rest of the group will watch the movements of the image. If the image fails to make the correct movement, she/he will be retired. Another child will take her/his place and the game will continue. A scoring scheme can be introduced. The group that scores the maximum will be declared the winner.
