# is equal to (where  denotes fractional part of a) b) c) d)

## Question ID - 100015 :-  is equal to (where  denotes fractional part of a) b) c) d)

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Answer Key : (d ) -

(d)

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 The focal length of a spherical mirror is 20 cm. The radius of curvature of this mirror will be (a) 10 cm (b) 20 cm (c) 40 cm (d) 80 cm