PES SS 2 Summer Physics Exam
- 1. 1. Two bodies, P and Q are in thermal equilibrium. Which statement is correct about the bodies?
A) The temperature of P is higher that the temperature of Q
B) P and Q have the same heat capacity
C) The temperature of Q is higher that the temperature of P
D) P and Q have the diffeent heat capacity
- 2. 2. The expansion of a liquid by a temperature rise of 1k is it's
A) Real expansivity
B) Superficial expansivity
C) Cubical expansivity
D) Apparent expansivity
- 3. 3. In which of the following is thermal expansion a disadvantage?
A) Railway track
B) Fire alarm
C) Thermometre
D) Hot air ballon
- 4. 4 The sagging of over head electrical wire is caused by
A) Superficial expansion
B) Apparent expansion
C) Cubical expansion
D) Linear expansion
- 5. The anomalous behaviour of water occurs at a range
A) 0⁰C-100⁰C
B) 4⁰C-100⁰C
C) 0⁰C-4⁰C
D) -5⁰C-0⁰C
- 6. The SI unit of heat is
A) Farenheit
B) Centigrade
C) Joule
D) Kelvin
- 7. 7. The relationship between superficial expansivity and linear expansivity is
A) B=2/3Y
B) Y=3¢
C) Yr=Ya+Yc
D) B=2¢
- 8. 8 The diameter of a brass ring at 30⁰C is 50.00cm To what temperature must this ring be heat to increase its diameter to 50. 29cm. Linear expansivity of brass is 1.9×10-⁵k-¹
A) 306.1⁰C
B) 182.6⁰C
C) 335.3⁰C
D) 152.6⁰C
- 9. 9 A density glass bottle contains 44.25g of a liquid at 0⁰C and 42.02g at 50⁰C Determine the real cubical expansivity of the liquid. Linear expansivity of glass is 1.0×10-⁵k-¹
A) 1.03x10-³k-¹
B) 1.09x10-³k-¹
C) 1.06x10-³k-¹
D) 3.0x10-³k-¹
- 10. 10. The transfer of heat between the Sun and the solar panel is by
A) Convection
B) None
C) Radiation
D) Conduction
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