Question

Q1. magnification produced by a concave mirror-
a) is always equal to unity
b) is always less than unity
c) is always greater than unity
d) may be greater or less than unity

Q2. a concave mirror has a radius of curvature of 30cm , then its focal length would be
a) 60cm
b) 30cm
c) 15cm
d) 7.5cm

Answer 1

Q1 - a) is always equal to Unity

Q2 -15 cm

hope this will help you

Answer 2

Q.2 the focal length will be --> c)15cm.