A person needs a lens of power +2 for correcting his near vision. What is the focal length of the lens required?

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Solution

P = 1/f

so, f = 1/P
= 1/2
= 0.5 m = 50 cm

The focal length lens required is 50 cm

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A person needs a lens of power +2 for correcting his near vision. What is the focal length of the lens required?

P = 1/f so, f = 1/P = 1/2 = 0.5 m = 50 cm The focal length lens required is 50 cm

P = 1/f

so, f = 1/P
= 1/2
= 0.5 m = 50 cm

The focal length lens required is 50 cm