Question

17. A thin rod of 5cm length is kept along
the axis of a concave mirror of 10cm
focal length such that its image is
real and magnified and one end
touches the rod. Its magnification
will be
(a) 1
(b) 2
(d) 4
(c) 3
1​

Answer 1

Answer:

correct answer is 1

Explanation:

images real and magnified and one end touches the end

So m= 1/f

u=2f

so,5X2=10

M= Size Of Object/ Size Of image=10/10=1

Hence, the option A is the correct answer

I hope it helps