Physics MCQs on Heat & Temperature: Get free access to solved multiple choice questions on Heat & Temperature in Physics.
In this blog post, we have provided Physics MCQs on Heat & Temperature with answers. These Physics MCQs are useful for Senior Secondary classes and for various entrance exams.
Physics MCQs on Heat & Temperature
1. Young’s modulus of a substance depends on
Its length
Its area
Acceleration due to gravity
None of the above
2. The effect of temperature on the value of modulus of elasticity for various substances in general
It increases with an increase in temperature
Remains Constant
Decrease with rising in temperature
Sometimes Increases and Sometimes Decreases
3. Two water droplets merge with each other to form a larger droplet. In this process
Energy is liberated
Energy is absorbed
Energy is neither liberated nor absorbed
Some mass is converted to energy
4. Two soap bubbles A and B are found at the two open ends of a tube. Bubble A is smaller than bubble B. If the valve on the tube connecting the two bubbles is opened and air can flow freely between the bubbles, then
There is no change in the size of the bubbles
The two bubbles will become of equal size
A will become smaller and B will become larger
B will become smaller and A will become larger
5. The rise in temperature is found to be ……….. in different solids in spite of having the same mass and being supplied the same quantity of heat.
same
different
can’t say
None of these
6. Which of the following is the fastest process of heat transfer?
conduction
convection
radiation
insulation
7. The specific heat of a material and other physical quantities related to heat transfer are measured with
Thermometer
Ceilometer
calorimeter
Cathetometer
8. When heat is given to a substance it expands in
length
area
volume
All of the above
9. Which is not an assumption of Kinetic Theory of Gases?
Between collisions, molecules move in straight lines with uniform velocities
The distribution of molecules is not uniform throughout the container
Gas molecules collide with each other and with the walls of the container. These collisions are perfectly elastic
The size of the molecules is negligible compared to the separation between them
10. Which statement is not true?
Solids have more ordered structure than gases
Liquids have more ordered structure than gases
Solids have more ordered structure than liquids
Gases have more ordered structure than liquids
11. The factors directly proportional to the amount of heat conducted through a metal rod are
Area of cross-section
Time of flow of Heat
Temperature gradient
All of these
12. The unit of heat is
calorie
kcal
joule
All of these
13. The fastest process of heat transfer is
conduction
convection
radiation
insulation
14. High temperatures are measured by the
Thermometer
Temperature meter
pyrometer
energy meter
15. Temperature can be measured in, and
°C (Celsius)
°K (Kelvin)
°F (Fahrenheit)
All of these
16. First law of thermodynamics tells nothing about
the direction of the process
the heat is given to it
the work done on it
None of These
17. Reversible process is defined as
The process can be retraced in the opposite direction from its final state to its initial state
The process which cannot be retraced along with the same equilibrium state from the final to the initial state
Any thermodynamic process that occurs at a constant heat
in which system returns back to its initial state
18. The unit of heat is
Calorie
Kcal
Joule
All Of These
19. Process of heat transfer is called
Conduction
Convection
Radiation
All Of These
20. The fastest process of heat transfer is
conduction
convection
radiation
insulation
21. How is heat transferred through a vacuum?
By conduction
By convection
By radiation
By convection and radiation
22. How is heat transferred through the walls of a steel radiator?
By conduction
By convection
By radiation
By convection and radiation
23. Rate of heat transfer by _______ depends on the temperature difference between the surfaces and also on their areas?
conduction
convection
radiation
All of these
24. A very good conductor of heat contains
metals
nonmetals
gases
liquid
25. In radiation, heat is transferred
from one atom/ molecule to another atom/molecule which vibrates about their fixed positions
by the bodily motion of molecules
through electromagnetic waves
All of these
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