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  4. The schematic symbol of light emitting diode is (LED)

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Q. The schematic symbol of light emitting diode is $(LED)$

MHT CETMHT CET 2016Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

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LED is the light emitting diode i.e. it converts the electrical energy into light energy. Therefore the it emits the light out of the diode.
Hence, in symbol of LED the outgoing arrows are shown.
Thus option B is correct.
In option A symbol has arrows are pointing inwards, hence it represents photodiode. Also, option C represent simple diode and option D represents zener diode.