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Question
The spherical mirror with a reflecting surface curved inward is called
Options
convex mirror
concave mirror
curved mirror
None of the above
Solution
Concave mirror
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RELATED QUESTIONS
One half of a convex lens of focal length 10 cm is covered with a black paper. Can such a lens produce an image of a complete object placed at a distance of 30 cm from the lens? Draw a ray diagram to justify your answer. A 4 cm tall object is placed perpendicular to its principal axis of a convex lens of focal length 20 cm. The distance of the object from the lens is 15 cm. Find the nature, position and the size of the image.
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
Explain the following term related to spherical lenses:- principal axis
Define the Focal length of a spherical mirror
Name the two kinds of spherical mirrors and distinguish between them.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
State two uses of a concave mirror.
Select the correct option:
A concave mirror is made by cutting a portion of a hollow glass sphere of radius 30 cm. The focal length of the concave mirror is:
