Question

I want the answer of the given question with solutions
Caution: no direct answer.

Answer 1

p=1/f

1/f = 1/v -1/u

where,

v= 1.5 m

and u = 2.5×10^-2 m

p= 1/1.5 - 1/2.5×10^-2

p= 1.066 D ANS.

(19 ) OPTION 3 Is the answer.