Answer: transverse wave.
- A longitudinal wave
- B transverse wave
- C particle stream
- D standing wave
Correct answer: B. transverse wave
Explanation: Only transverse waves can be polarized, so polarization proves light is a transverse wave.
Two coherent slits S₁ and S₂ act as secondary sources; at each point on the screen, the path difference between light from S₁ and S₂ determines whether the waves arrive in phase (bright fringe) or out of phase (dark fringe), producing the characteristic alternating fringe pattern.
Concept context
Huygens principle, Young's double slit, diffraction, polarization. Essential for JEE.