| ⇦ | 
| ⇨ |
The maximum and minimum intensities of two sources is 4:1. The ratio of amplitude is
Options
(a) 3 : 1
(b) 1 : 3
(c) 1 : √3
(d) √3 : 1
Correct Answer:
3 : 1
Explanation:
The intensity is proportional to the square of the amplitude.
Therefore if the intensities-maximum of one source and minimum of the other is taken, then the answer is different. But from the answer we presume that the light from two sources of different amplitudes are superposed. In that case,
Iₘₐₓ / Iₘᵢₙ = [A₁+A₂ / A₁-A₂]²
⇒ 4/1 = [A₁+A₂ / A₁-A₂]²
2/1 = [A₁+A₂ / A₁-A₂]
Using componendo and dividendo
2+1 / 2-1 = A₁/A₂ ⇒ A₁/A₂ = 3/1 = 3 : 1
Related Questions: - An aicraft executes a horizontal loop of radius 1 km with a speed of 900 kmh⁻¹
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- A capacitor of capacitance value 1 μF is charged to 30 V and the battery
- The dual nature of light is exhibited by
- If 20% of a radiactive element decays in 10 days, then amount of original material left
Topics: Waves
(80)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An aicraft executes a horizontal loop of radius 1 km with a speed of 900 kmh⁻¹
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- A capacitor of capacitance value 1 μF is charged to 30 V and the battery
- The dual nature of light is exhibited by
- If 20% of a radiactive element decays in 10 days, then amount of original material left
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply