Question

A particle (object) is moving towards a fixed convex mirror. The image also moves. If $V_i=$ speed of image and $V_0=$ speed of the object, then

• A. $V_i<V_0$ if $|u|<|F|$
• B. $V_i>V_0$ if $|u|>|F|$
• C. $V_i<V_0$ if $|u|>|F|$
• D. $V_i=V_0$ if $|u|=|F|$

Answer 1

Answer: (A), (C)

$V_i<V_0$ if $|u|>|F|$

For convex mirror , $|m|<1$ (for any real object)

Now, $V_{image}=-m^2{V}_{object}$

$\Rightarrow |V_{image}|<|V_{object}|$ (always)

Hence, options (a) and (c) are the correct answers.