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NEST2021PhysicsThermal Properties of Matter

A bimetallic strip of lead and nickel has a total thickness of 8 ~cm (4 ~cm each). The strip is straight at a temperature of 300 K . The coefficient of linear expansion of lead is 29 10⁻⁶ ~K ⁻¹ and that of nickel is 16 10⁻⁶ ~K ⁻¹ . If the strip is heated to 400 K , then the radius of curvature of the strip is close to

Options

  1. A90 cm
  2. B30 m
  3. C35 cm
  4. D9 m

Correct answer

B. 30 m

Step-by-step solution

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