Selected MCQ

Current Question
The Compton wavelength is inversely proportional to:
  • A. Charge
  • B. Mass
  • C. Velocity
  • D. Frequency
Correct Answer: B
Explanation:
(\lambda = h/mc), inversely dependent on mass.
Related Question 1
For blackbody radiation, Wien’s displacement law relates peak wavelength inversely to:
  • A. Pressure
  • B. Temperature
  • C. Entropy
  • D. Emissivity
Correct Answer: B
Explanation:
The hotter the blackbody, the shorter the wavelength at which it emits most strongly.
Related Question 2
Which radiation has shortest wavelength?
  • A. Radio
  • B. Microwave
  • C. X-ray
  • D. Gamma ray
Correct Answer: D
Explanation:
Gamma rays have highest frequency and shortest wavelength.
Related Question 3
In a non-inertial rotating frame, the Coriolis force acting on a particle is proportional to:
  • A. Velocity squared
  • B. Angular velocity cross velocity
  • C. Mass only
  • D. Displacement
Correct Answer: B
Explanation:
Coriolis force is given by (2m(\vec{\Omega} \times \vec{v})).
Related Question 4
A black hole’s event horizon radius is proportional to:
  • A. Charge only
  • B. Mass
  • C. Temperature
  • D. Spin only
Correct Answer: B
Explanation:
Schwarzschild radius depends directly on mass.
Related Question 5
The Compton effect demonstrates:
  • A. Wave nature of electrons
  • B. Particle nature of light
  • C. Gravitational redshift
  • D. Thermal radiation only
Correct Answer: B
Explanation:
Photon scattering shows momentum transfer like particles.