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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceAssertion–reasonEasyRecall

JEE Main 29 July 2022, Shift 2, Physics Q34

Question 34 of 90 in this shift, Physics question 4 of 30, Section A.

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Alloys such as constantan and manganin are used in making standard resistance coils. Reason R: Constantan and manganin have very small value of temperature coefficient of resistance. In the light of the above statements, choose the correct answer from the options given below.
  1. (1)Both A and R are true and R is the correct explanation of A.Official answer
  2. (2)Both A and R are true but R is NOT the correct explanation of A.
  3. (3)A is true but R is false.
  4. (4)A is false but R is true.

Official answer

Option 1

NTA final key.

Chapter
Current Electricity
Topic
Ohm's Law and Resistance
Idea tested
Resistivity of Alloys

Same topic in other shifts

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  6. 4 Apr 2024, Shift 2 · Q42An electric bulb rated 50 WW - 200 VV is connected across a 100 VV supply. The power dissipation of the bulb is:EasySingle correct

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.