Question

Q42. The equation conneciing object distance u, im-
age distance v and focal length for a lens is
1/u + 1/v =1/f

A student measures values of u and v, with their
associated uncertainties. These are
= 50 mm + 3 mm,
7 = 200 mm + 5 mm.
He calculates the value of ſ as 40 mm.
What is the uncertainty in this value?
A +-2.1 mm
B +-3.4 mm
C +-4.5 mm
D +-6.8 mm​

Answer 1

Answer:

d

Explanation:

i think so the answer is d