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A lamp is placed at a distance of 16 cm,...

A lamp is placed at a distance of 16 cm, from a photocell and the current observed is 1 mA.If the distance from the lamp is reduced to 8 cm, the photo current now will be

A

`4 mA`

B

`0.25 mA`

C

`1 mA`

D

`0.125 mA`

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