Verified Solution • 2025–26 Session moderate

QAIPMT-2008-Ph-2238: NEET 2008 Physics - Class 12 AIPMT-2008-Ph-2238 Solution: A p-n photodiode is made of a material with a band gap of 2.0…

A p-n photodiode is made of a material with a band gap of 2.0 eV. The minimum frequency of the radiation that can be absorbed by the material is nearly

Multiple Choice Options

  • A 1×10141\times10^{14} Hz
  • B 20×101420\times10^{14} Hz
  • C 10×101410\times10^{14} Hz
  • D 5×10145\times10^{14} Hz

Step-by-Step Verified Solution

Energy gap E g = 2.0 eV E g = 2.0 _ 1.6 _ 10 �19 J E g = hf f = frequency of radiation _ f = E g h = 3.2 _ 10 _ 19 6.625 _ 10 _ 34 = 5 _ 10 14 Hz

Related Learning Resources & Exam Preparation

NEET PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring