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If two +5 D, lenses are mounted at some distance apart, the equivalent power will always be negative, if the distance is

a)

Greater than 40 cm

b)

Equal to 10 cm

c)

Equal to 10 cm

d)

Less than 10 cm


Question ID - 152347 | Toppr Answer

If two +5 D, lenses are mounted at some distance apart, the equivalent power will always be negative, if the distance is

a)

Greater than 40 cm

b)

Equal to 10 cm

c)

Equal to 10 cm

d)

Less than 10 cm

1 Answer - 5876 Votes

3537

Answer Key : (a) -

(a)

When two lenses are separated by some distance , then equivalent power

Power  will be negative, if 10-25x will be negative



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