Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Elasticity, Thermal Expansion, Calorimetry and Heat Transfer/
Question 30830
JEE Physics · Medium

Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Bimetallic Strip MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Bimetallic StripMediumQuestion 30830

Question

A bimetallic strip bends on heating because:
  1. A
    Both metals expand equally
  2. B
    Two metals have different Young's moduli
  3. C
    Two metals have different coefficients of expansion
    Correct
  4. D
    One metal melts

Correct answer

Two metals have different coefficients of expansion

Explanation

The metal with higher α expands more, causing the strip to bend toward the other side.

Review Elasticity, Thermal Expansion, Calorimetry and Heat Transfer notesStart timed chapter practice