Selected MCQ

Current Question
A body projected vertically upward from Earth’s surface neglecting air resistance will have which quantity conserved during flight if Earth’s rotation is neglected?
  • A. Kinetic energy only
  • B. Momentum only
  • C. Mechanical energy
  • D. Gravitational force
Correct Answer: C
Explanation:
In a uniform conservative gravitational field with no dissipation, total mechanical energy is conserved.
Related Question 1
Which process transports water upward?
  • A. Diffusion
  • B. Osmosis
  • C. Transpiration
  • D. Active transport
Correct Answer: C
Explanation:
Transpiration pull drives ascent.
Related Question 2
Which device measures resistance?
  • A. Ammeter
  • B. Voltmeter
  • C. Ohmmeter
  • D. Thermometer
Correct Answer: C
Explanation:
Ohmmeter measures resistance.
Related Question 3
Which law governs blackbody radiation spectrum?
  • A. Newton’s law
  • B. Planck’s law
  • C. Boyle’s law
  • D. Hooke’s law
Correct Answer: B
Explanation:
Planck’s law describes spectral energy distribution.
Related Question 4
Which boundary causes earthquakes?
  • A. Divergent
  • B. Convergent
  • C. Transform
  • D. All
Correct Answer: D
Explanation:
All plate boundaries can generate earthquakes.
Related Question 5
Which rock forms from magma below surface?
  • A. Extrusive
  • B. Intrusive
  • C. Sedimentary
  • D. Metamorphic
Correct Answer: B
Explanation:
Intrusive rocks cool underground.