Photo cell is a device to

Store photons

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Measure light intensity

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Convert photon energy into mechanical energy

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Store electrical energy for replacing storage batteries

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Solution

The correct option is B
Measure light intensity

Number of electrons can be measured which are directly proportional to the intensity of radiation.

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Photo cell is a device to

The correct option is B Measure light intensity Number of electrons can be measured which are directly proportional to the intensity of radiation.

The correct option is B
Measure light intensity

Number of electrons can be measured which are directly proportional to the intensity of radiation.