Polarization proves light is: MCQ with Answer and Explanation

Polarization proves light is:

A. Transverse wave

B. Matter wave

C. Mechanical wave

D. Longitudinal wave

Answer: Option A

Solution (By JKExamLibrary)

Polarization possible only for transverse waves (oscillations ⊥ propagation). Longitudinal waves (sound) cannot be polarized. Memory aid: 'Polarization ⇒ transverse nature; light is EM transverse wave'. Wave property frequently tested in competitive exams.

This question belongs to: Science Physics

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Question #1 Report Error

A car moving with speed 20 m/s applies brakes and stops in 5 s. The distance covered during braking is

A. 50 m

B. 200 m

C. 25 m

D. 100 m

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
u=20, v=0, t=5, a = (0-20)/5 = -4 m/s². s = ut + ½at² = 20×5 + ½×(-4)×25 = 100 - 50 = 50 m. Or average velocity = (20+0)/2 = 10 m/s, distance = 10×5 = 50 m.

This question belongs to: Science Physics