Advertisements
Advertisements
प्रश्न
Define the following term in relation to concave mirror.
Center of curvature
Advertisements
उत्तर
The centre of a hollow sphere of which the mirror forms a part is called the centre of curvature.
APPEARS IN
संबंधित प्रश्न
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?
Give one use each of a concave and a convex mirror.
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
