Advertisements
Advertisements
Question
Advertisements
Solution
APPEARS IN
RELATED QUESTIONS
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?
Write true or false
A virtual image formed by a spherical mirror is always erect and situated behind the mirror.
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
State the position of object for which the image formed by a concave mirror is of same size.
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
Define the following term:
spherical mirror
The diagram below shows the parallel rays incident on a convex mirror. C is the centre of the curvature of the mirror. By drawing the paths of the reflected rays, label the focus F and hence find the focal length of the mirror.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
