Question

Try this..................... ​

Answer 1

$\huge{\mathfrak{HEYA\:MATE\:!!}}$

Answer...

Power of two lenses when they are kept in contact ,

P = P(1) + P(2)

P = -15 + 5

P = -10 D

F = 1/P

F =- 0.1 m = -10 cm

option C.

$\mathscr{\large{Hope\:helps\:}}!! \\ \\ {GRACIAS!!}$

$\huge{\red{\ddot{\smile}}}$

Answer 2

Answer:

We know.

F=1/p

P=p1+p2

= -15+5

=-10D

F= 1/-10

= -0.1m

=-10cm