Question

convex lens of focal length 25cm and concave lens focal length 10cm are placed is close contact with each other calculate the power...​

Answer 1

Answer:

☺ HERE IS YOUR ANSWER ☺

Explanation:

Focal length of convex lens :- 25 cm

Focal length of concave :- -10 cm

• As per power formula p=1/f

Now,

• power 1 (P1) =1/f
• 1/25 cm
• = 1/25×100= 4D

• Power 2 (P2)=1/f
• 1/-10
• =1/-10×100
• =10D

Now,

P= P1 × P2

= 4×(-10) D

= -6 (ans) ✔✔

HOPE IT'S HELP YOU ✌

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