Question

An a object of height 8cm is kept at distance of 80cm in front of Convex mirror. The focal length of the mirror is 40cm. Find the position of the image nature of the image and magnification produced by mirror .
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Answer 1

Answer:

Given;

Height of object =8cm

u=-80cm(distance of object is always taken in negative)

v=?

f=40cm(focal length of convex mirror is positive)

we know that,

1/f=1/u+1/v

so,

putting the values in the equ.

1/40=-1/80+1/v

1/v=1/80+1/40

1/v=1+2/80

=3/80

v=80/3

v=26.6

so, object is placed at the distance of 26.66 somewhat

magnification=-v/u

the nature of image is virtual and diminished

1. and magnification produce is somewhat 2.66