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Saturday, 31 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 29 June 2022, Shift 2, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

A potential barrier of 0.4 V exists across a p-n junction. An electron enters the junction from the n-side with a speed of 6.0 × 105 ms−110^5\,\mathrm{ms^{-1}}. The speed with which electron enters the p side will be x3\dfrac{x}{3} × 105 ms−110^5\,\mathrm{ms^{-1}} the value of xx is ________. (Given mass of electron = 9 × 10−3110^{-31} kg, charge on electron = 1.6 × 10−1910^{-19} C.)

Official answer

14

NTA final key.

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.