Question

Following figure illustrates the ray diagram for the formation of image by a concave mirror. The
position of the object is beyond the center of curvature of the concave mirror. On the basis of given
diagram answer the following questions. [4]
(a) the focal length of the concave mirror is 10 cm, the image formed will be at a distance ………… .
(i) Between 10 cm and 15 cm (ii) Between 10 cm and 20 cm
(iii) Beyond 20 cm (iv) At 20 cm
(b) In case of concave mirror, the image distance from the pole of the mirror is always positive – True
or False.
(c) If the size of the object in the given figure is 5cm and the magnification produced is -0.5, the size of
the object is ………… (i) -2.5 (ii) -0.1 (iii) 2.5 (iv) 0.1
(d) A negative sign in the magnification value indicates that the image is …………..
(i)Real and inverted (ii) Real and erect (iii) Virtual and erect (iv) Virtual and inverted​

Answer 1

Answer:

a. (ii) Between 10 and 20

b. False

c. (i) 2.5

d. (i)Real and inverted