AP-EAPCET SERIES Physics
Thermal Expansion
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
1
2025 2
2023 1
2022 Chapter Questions 4 MCQs
01
PYQ 2022
medium
physics ID: ap-eapce
An iron sphere of diameter and mass is immersed in hot water, causing its temperature to rise by . If is the coefficient of linear expansion, the change in surface area of the sphere is:
1
2
3
4
02
PYQ 2023
medium
physics ID: ap-eapce
A steel tape of 300 cm is graduated at . A steel rod measured to be 110 cm at with this tape has actual length (given ):
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2
3
4
03
PYQ 2023
medium
physics ID: ap-eapce
A rod is found to be 0.05 cm longer at 40°C than it is at 10°C. The length of the rod at 0°C is (coefficient of linear expansion of the material of the rod = )
1
101.1 cm
2
120.2 cm
3
105.1 cm
4
111.1 cm
04
PYQ 2025
medium
physics ID: ap-eapce
A wire of length 0.5 m and area of cross-section m at a temperature of 100°C is suspended vertically by fixing its upper end to the ceiling. The wire is then cooled to 0°C, but is prevented from contracting, by attaching a mass at the lower end. If the mass of the wire is negligible, then the value of the mass attached to the wire is [Young's modulus of material of the wire = N/m ; coefficient of linear expansion of the material of the wire = K and acceleration due to gravity = 10 m/s ]
1
10 kg
2
20 kg
3
30 kg
4
40 kg