Class 11 Important Questions for Physics: Thermal Expansion

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Thermal Expansion â?– Illustrative Examples 1) If the temperature in a room is 20oC, what is its temperature in degree Fahrenheit? Data :

(Ans. :

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2) The normal boiling point of liquid oxygen is -183oC. What is this temperature in Kelvin scale. Data :

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3) At what temperature do the Kelvin and Fahrenheit scale coincide? (Ans. :

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4) When the pressure of 1 litre of gas at 270C is doubled, its temperature rises to 1140C. Calculate the final volume of a gas. Data :

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5) The length of a metal rod increases by 1.2cm when its temperature is increased to 390oC from 30oC. Determine the original length of the road. Data :

(Ans. :

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6) A thin iron plate has a length of 25 cm and breadth of 15 cm at 20oC. Find its area when it is heated to 160oC. (Given :

for iron

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Data :

(Ans. :

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7) A metal ball of 0.2m radius is heated from 273oC to 348oC. Calculate the increase in surface area of the ball. (Coefficient of superficial expansion = 0.000036 K)

F.Y.J.C.

Thermal Expansion


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