Question

sar
Speed of
A car A is moving with
a speed of
66 kmh and
B is moving with
75 kmh! , along parallel straight
the
paths,
starting from
dame point
the position og Car A wat. B
after
.
What
В
is
20
minutes
?​

Answer 1

Answer:

Correct option is

C

In the rear view mirror, the speed of the approaching car would appear to decrease as the distance between the cars decrease

mirror formula:

f1=v1+u1

differentiating both side:

v2dv=−u2du

⟹dudv=−u2v2

So when rear car approaches, initially it appear at rest as image is formed at focus. When car approaches nearer this speed will appear to increase so answer is (d)