In a photoelectric experiment, if the potential difference across the electrodes is equal to the stopping potential and the emitter plate is held at negative potential with respect to the collector plate mark the correct statement :

No electron is emitted from the emitter plate.

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Electron is emitted from the emitter plate but it stops at half the length, of the tube

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Electron is emitted from the emitter plate but it stops just before reaching the collector plate.

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All the emitted electrons will reach the collector plate.

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Solution

The correct option is A No electron is emitted from the emitter plate.
In a photoelectric experiment, if the potential difference between the electrodes is equal to the stopping potential and emitter plate is held at negative potential with respect to collector plate then no electron is emitted from the emitter plate. For emission of electron from the the emitter plate the potential difference between the electrodes must be greater than the stopping potential.

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