Directions to Solve In questions given below, a part of the sentence is italicised and underlined. Below are given alternatives to the italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, option 'D' is the answer. A have had nothing
B
has had nothing
C did have nothing
D No improvement
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A 65525 65531
B 65519 65521
C 65517 65517
D 65521 65525
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A
the power of a lens is the reciprocal of its focal length
B
the unit of power of the lens is diopter
C
the power of two or more thin lenses in contact is the power of the combination of the lenses
D
all the above.
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A False
B True
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