Question

pls solve this question

Answer 1

Hey mate!

here is your answer:

B) The reason for the warning is that there are chances of accident if we stop the car.The advantage is that it prevents accident.

C) magnification=-v/u

1/f=1/v+1/u

1/f-1/v=1/u

v-f/vf=1/u

vf/v-f=u

now, magnification =-v÷vf/v-f

magnification=-v×v-f/vf

magnification =v(-1-f)/vf

magnification =-1-f/f

hope it helped!