Selected MCQ

Current Question
Which gas is inert?
  • A. Oxygen
  • B. Nitrogen
  • C. Helium
  • D. Hydrogen
Correct Answer: C
Explanation:
Helium is noble gas.
Related Question 1
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 2
Which frame is non-inertial?
  • A. Constant velocity frame
  • B. Rotating frame
  • C. Free-fall frame
  • D. Spacecraft coasting
Correct Answer: B
Explanation:
Rotating frames experience fictitious forces.