FMT NAVY PHYSICS QUIZ 5
Results
PASS
FAIL
#1. The vector product of two perpendicular vectors is:
#2. Scalar product of two orthogonal vectors is:
#3. Moment of force is also known as:
#4. A body is in complete equilibrium if:
#5. Centripetal force is always directed towards:
#6. Banking of roads is done to provide necessary:
#7. Moment of inertia depends upon:
#8. Geostationary satellite has an orbital period of:
#9. Bernoulli’s principle is based on conservation of:
#10. Venturi meter is used to measure:
#11. Simple harmonic motion is a special type of:
#12. Time period of a simple pendulum depends upon its:
#13. Resonance occurs when forcing frequency is equal to:
#14. In stationary waves, the points of zero amplitude are called:
#15. Doppler effect applies to:
#16. Young’s double slit experiment demonstrates:
#17. Polarization proves that light is a:
#18. In a compound microscope, the intermediate image is:
#19. First law of thermodynamics is a statement of law of conservation of:
#20. An isothermal process takes place at constant:
#21. An adiabatic process is one in which:
#22. Efficiency of a Carnot engine depends on:
#23. Electrostatic force between two charges is given by:
#24. Electric field intensity inside a hollow charged conductor is:
#25. The capacitance of a parallel plate capacitor increases when:
#26. The unit of electric potential is:
#27. A dielectric material placed between capacitor plates:
#28. Wheatstone bridge is used to measure unknown:
#29. Potentiometer is an accurate instrument for measuring EMF because it draws:
#30. The temperature coefficient of resistance of semiconductors is:
FMT PHYSICS REVISION SERIES
Physics Quiz 3: Heat and Temperature
Learn how temperature is measured, how heat moves, and why materials expand when heated.
Explore Thermal Physics
Welcome to Pak Navy FMT Physics Quiz 3. This lesson covers heat, temperature, thermal expansion, heat transfer, and specific heat capacity. These concepts help explain everyday phenomena, from warming water to the expansion of railway tracks in hot weather.
Although heat and temperature are related, they do not mean the same thing. Temperature describes the thermal state of a substance, while heat is energy transferred because of a temperature difference.
Topics to Review
- Difference between heat and temperature
- Celsius and Kelvin scales
- Conduction, convection, and radiation
- Thermal expansion
- Specific heat capacity
Heat Versus Temperature
Temperature indicates how hot or cold something is and is related to the average microscopic kinetic energy of its particles. Its SI unit is the kelvin (K).
Heat is energy transferred from one body to another because of a temperature difference. It is measured in joules (J).
Heat
Energy transferred due to a temperature difference.
Temperature
A measure describing the thermal state of a substance.
Three Methods of Heat Transfer
1. Conduction
Heat transfer through a material without the material as a whole flowing from place to place. It is especially important in solids.
Example: A metal spoon becomes warm when one end is placed in hot water.
2. Convection
Heat transfer through the bulk movement of a fluid, such as a liquid or gas.
Example: Circulation in water as it heats in a pot.
3. Radiation
Energy transfer by electromagnetic waves. Radiation does not require a material medium.
Example: Energy from the Sun reaching Earth.
Thermal Expansion
Many substances expand when their temperature increases because the average separation between their particles changes. The amount of expansion depends on the material and the temperature change.
Expansion is considered when designing bridges, railway tracks, and other structures exposed to changing temperatures.
Specific Heat Capacity
Specific heat capacity is the energy required to raise the temperature of one kilogram of a substance by one kelvin, without a change of state.
Q = mcΔT
Q = heat energy, m = mass, c = specific heat capacity, and ΔT = temperature change.
Preparation Advice
Learn the difference between heat and temperature first. Next, practise identifying the three methods of heat transfer from everyday examples. For numerical questions, understand what each symbol in Q = mcΔT represents before substituting values.
Revision Checklist
- Remember the SI units of heat and temperature.
- Distinguish conduction, convection, and radiation.
- Understand thermal expansion.
- Review the specific heat capacity formula.
Educational notice: This article is independent study material and is not an official Pakistan Navy FMT examination paper.