Question

A driving mirror consists of a cylindrical mirror of radius of curvature $10cm$ and the length over the curved surface is $10cm$. If the eye of the driver be assumed to be at a great distance from the mirror, then field of view in radian is

• A. 2.0
• B. 4.0
• C. 3.0
• D. 5.0

Answer 1

Answer: (A)

$f=\frac{R}{2}=5cm$
$\theta =\frac{10}{5}=2rad$