A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of the combination is
a)-6.5D
b)+6.5D
c)+6.67D
d)-1.5D
Answers
Answered by
12
Heya!!
P1= 100/40= 2.5D
P2= -100/25= -4D
So, P= P1+P2= 2.5D-4D= -1.5D
Hence, (D)-1.5 is the right answer
Hope it helps✌️✌️
P1= 100/40= 2.5D
P2= -100/25= -4D
So, P= P1+P2= 2.5D-4D= -1.5D
Hence, (D)-1.5 is the right answer
Hope it helps✌️✌️
Surbhiss:
thanks
hii
Answered by
7
Heya Friend !!
Please view the solution in the attachment .
Hence , option d) is the correct answer .
Please view the solution in the attachment .
Hence , option d) is the correct answer .
Attachments:
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