Question

11. When an object is placed at a distance of 30 cm infront of the mirror, an image is obtained
at 15 cm on the same side,
(a) Write the values of u and v according to the new cartesian sign convention
(b) Calculate the focal length of the given mirror,​

Answer 1

Explanation:

a)u=-30

v=-15

b) 1/f=1/u+1/v

1/f=1/-30+1/-15

1/f=1/-30

f=-30