Question

u = -100 cm, v = - 25 cm, f = ?​

Answer 1

Answer:

according to the mirror formula,

1/v + 1/u = 1/f

or, 1/-25+1/-100 = 1/f

or, -4/100-1/100 = 1/f

or, -5/100 = 1/f

or, -1/20 = 1/f

or, f = -20

ans.

CHECK IT OUT!!

Answer 2

Answer:since,

V= -25

U= -100

So by applying the formula---

1/v + 1/u = 1/f

1/-25 + 1/-100 = 5/-100

Thus, f = -20

==================================

Plzzzzz mark as brainliest for my help

Explanation: