Question

Solve this given question ​

Answer 1

Answer:

here's the answer ll

hope it helps you

Answer 2

hlo mate ✌️

Given :

u = -60 cm

v = -20 cm

To find :

focal length (f) = ?

_____________________________

Using Lens Formulae :

$= > \frac{1}{f} + \frac{1}{v} = \frac{1}{u}$

Putting the respective values :

$= > \frac{1}{ f} = ( \frac{1}{ - 20}) - ( \frac{1}{ - 60})$

1/f = -2/60

1/f = -30

Focal Length = -30 cm

Hope it helps ❣️