1. Mechanics
    2. 1. Units, Dimensions and Errors
    2. Vectors and Scalars
    3. Motion in a Straight Line
    4. Projectile Motion
    5. Newton's Laws of Motion
    6. Friction
    7. Work, Energy, Power and Collision
    8. Circular motion
    9. Rotational motion
    10. Simple Harmonic Motion
    11. Gravitation
    12. Elasticity
    13. Surface Tension
    14. Fluid dynamics and Viscosity
    15. Hydrostatics
  2. Heat and Thermodynamics
    3. 16. Thermometry
    17. Thermal expansion
    18. Calorimetry, Change of State and Hygrometry
    19. Gas Laws and Kinetic theory of Gases
    20. Transmission of Heat
    21. Thermodynamics
  3. Sound and Waves
    4. 22. Wave
    23. Superposition of Waves
    24. Stationary/ Standing waves
    25. Doppler's effect and Musical sound
  4. Optics
    5. 26. Reflection of Plane and Curved Mirrors
    27. Refraction at Plane surfaces and Total internal reflection
    28. Refraction through prism and Dispersion of Light
    29. Refraction through Lenses
    30. Chromatic abberation in Lenses, Optical instruments and Human eye
    31. Velocity of Light
    32. Photometry
    33. Wave nature of Light
  5. Electrostatics
    6. 34. Charge and Force
    35. Electric Field and Potential
    36. Capacitance
  6. Electrodynamics
    7. 37. Electric current
    38. Heating Effect of Current
    39. Thermoelectricity
    40. Chemical effect of Current
    41. Meters
  7. Electromagnetism
    8. 42. Properties of Magnets
    43. Magnetic effects of Current
    44. Electromagnetic induction
    45. Alternating current
  8. Modern Physics
    9. 46. Cathode rays, Positive rays and Electrons
    47. Photoelectric effect
    48. X-rays
    49. Atomic structure and Spectrum
    50. Radioactivity
    51. Nuclear physics
    52. Semiconductor and Semiconductor devices
    53. Diode and Triode valves
    54. Logic gates
    55. Relativity and Universe
    56. Particle physics
Heat and Thermodynamics
16. Thermometry
1. A thermometer reads 140°F. What is the reading in Celsius scale?

[BP 2012]

  • 60°C
  • 140°C
  • 95.6°C
  • 75°C
2. -50°C in Kelvin scale is:

[MOE 2009]

  • 223 K
  • 323 K
  • 23 K
  • -50 K
3. A faulty thermometer reads 1°C at ice point and 99°C at boiling point. Correct temperature at 25°C reading:

[IOM 2012]

  • 24.40°C
  • 25.34°C
  • 36.3°C
  • 22.3°C
4. Faulty thermometer has LFP=5°C and UFP=95°C. Correct temperature at 35°C reading:

[IOM 2014]

  • 60°C
  • 40°C
  • 33.3°C
  • 20.5°C
5. Gas thermometer at constant volume is filled with gas at:

[KU 2012]

  • High pressure and low temperature
  • High temperature and low pressure
  • Low temperature and low pressure
  • High temperature and high pressure
6. Convert 98.4°F to Celsius:

[KU 2010]

  • 39°C
  • 36.9°C
  • 98.4°C
  • 371.4°C
7. Range of common mercury thermometer:

[IOM 04, KU 2010]

  • -30°C to 100°C
  • 0°C to 200°C
  • -30°C to 200°C
  • -30°C to 357°C
8. 40°C equals:

[IOM 2000, KU 2017]

  • 102°F
  • 104°F
  • 106°F
  • 108°F
9. Absolute zero temperature is:

[IOM 96]

  • -273°C
  • -273 K
  • -273.14°C
  • -273.16°C
10. Hail stones are produced by:

[IOM 1995]

  • Freezing of cloud
  • Freezing of rain drops
  • Freezing of water vapor
  • None of above
11. Maximum measurable temperature with mercury thermometer:

[BPKIHS-08]

  • 100°C
  • 260°C
  • 360°C
  • 500°C
12. 69.8°F equals:

[BPKIHS-97]

  • 21°C
  • 45°C
  • 40°C
  • 54°C
13. Temperature where Celsius and Fahrenheit scales match:

[BP 2010, MOE 2012]

  • 40°C
  • 40°R
  • -40°C
  • 40°F
14. Fahrenheit reading is 3 times Celsius reading in hot bath. Temperature is:
  • 100°C
  • (80/3)°C
  • 80°C
  • 70°C
15. Temperature scale that's never negative:
  • Celsius
  • Fahrenheit
  • Reaumur
  • Kelvin
16. Fall in temperature when Fahrenheit reading drops from 212°F to 140°F (in °C):
  • 25°C
  • 30°C
  • 35°C
  • 40°C
17. Temperature when mercury thread is 40mm above LFP (total range=160mm):
  • 77°F
  • 45°F
  • 57°F
  • 68°F
18. Temperature at 60cm Hg pressure in gas thermometer (50cm at 0°C, 90cm at 100°C):
  • 12°C
  • 12.5°C
  • 25°C
  • 40°C
19. Temperature when resistance is 3.26Ω (2.71Ω at 10°C, 3.70Ω at 100°C):
  • 40°C
  • 50°C
  • 60°C
  • 70°C
20. Temperature when resistance doubles (α=0.00125/°C, R=1Ω at 300K):
  • 1154 K
  • 1100 K
  • 1400 K
  • 1127 K
21. Correct temperature when faulty thermometer (50-95 range) reads 59:
  • 48.6°C
  • 59°C
  • 60°C
  • 58°C
22. Temperature measured by thermometer Y when X reads 60°C (X:15-75, Y:25-125):
  • 100°C
  • 75°C
  • 80°C
  • 90°C
23. Boiling point on faulty thermometer (ice at -10°C, 60°C instead of 50°C):
  • 90°C
  • 110°C
  • 125°C
  • 130°C
24. Smallest detectable temperature (40μV/°C, 10Ω, 1μA):
  • 0.15°C
  • 0.20°C
  • 0.25°C
  • 0.40°C
25. Resistance at 50°C (6.74Ω at 0°C, 7.74Ω at 100°C):
  • 7.24Ω
  • 7.56Ω
  • 7.64Ω
  • 7.52Ω