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MHT CET Physics question

PhysicsSemiconductor ElectronicsMHT CET

Not in JEE Advanced syllabus

An LED is constructed from a pn junction based on a certain semi-conducting material whose energy gap is 1.9 eV. Then the wavelength of the emitted light is

Answer: (A)

Solution

E_g10^{-34}10^{8})10^{-19})$ ≈

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Question ID VK-085424