Question

An object of length 6cm is placed on the principal axis of a concave mirror of focal length f at a distance of 4f. The length of the image will be –

• A. 2cm
• B. 12 cm
• C. 4 cm
• D. 1.2 cm

Answer 1

m = =

= $\frac { \mathrm { h } _ { \mathrm { I } } } { 6 }$

\ h_I = – 2 cm