Question

An object of length 5 cm is placed at the
distance of 30 cm from the centre of a
convex lens of focal length 20 cm. Find
the position of the image and its size. 2+​

Answer 1

here is the answer

check it out

Answer 2

Answer:

Oh = 5cm

U = 30cm

f = 20

then we know that

1/u - 1/v = 1/f

1/30 - 1/v = 1/20

1/30- 1/20 = 1/v

2-3/60 = 1/v

-1/60 = 1/v

-1/60 = 1/v

v is -60 cm

Then position of image at the distance of -6 cm

we know that

M = -v/u

-(-60)/30

60/30

2

and we know that

M = hi/ho

2 = hi/5

hi = 2×5

=10cm

then it's size is 10 cm

hope its helpful dear friend