The power of a lens is -2D . what will be its focal length?
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Answered by
1
Hey there !!
Here’s the solution:
Formula : P = 1/f where P is power and f is focal length in meters.
Now, according to the question, P = -2D
So, for finding “f”, susbstitue the value in the formula:
-2 = 1/f
=> -2f = 1
=> f = -1/2 = 0.5 m
Hence, the focal length is 0.5 m (ignore the “-“ sign as it is considered negligible during calculations)
Hope this helps ya ✌️✌️
Have a great day
Here’s the solution:
Formula : P = 1/f where P is power and f is focal length in meters.
Now, according to the question, P = -2D
So, for finding “f”, susbstitue the value in the formula:
-2 = 1/f
=> -2f = 1
=> f = -1/2 = 0.5 m
Hence, the focal length is 0.5 m (ignore the “-“ sign as it is considered negligible during calculations)
Hope this helps ya ✌️✌️
Have a great day
Answered by
1
Answer:- Focal length is -0.5 m.
Explanation:
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