Question

A convex lens of focal length f produces an image 1/3 times that of the size of the object. The distance of the object from the lens is

Answer 1

u=−n

n

f(n+1)

u=−f(n+1)

Answer 2

Answer:

magnification, m=

n

1

⇒

n

1

=

u

v

v=

n

u

from lens formula

f

1

=

v

1

−

u

1

=

u

n

−

u

1

⇒

f

1

=

u

(n−1)

⇒f=

n−1

u

u=f(n−1)

Answer By

avatar

Toppr

SHARE

How satisfied are you with the answer?

This will help us to improve better

ASK

Get Instant Solutions, 24x7

No Signup required

girl

More Questions by difficulty

EASY

MEDIUM

HARD