| ⇦ | 
| ⇨ |
Source S₁ is producing, 10¹⁵ photons per second of wavelength 5000Å. Another source S₂ is producing 1.02 x 10¹⁵ photons per second of wavelength 5100Å Then, (power of S₂) (power of S₁) is equal to:
Options
(a) 1
(b) 1.02
(c) 1.04
(d) 0.98
Correct Answer:
1
Explanation:
energy emitted/sec by S₁, P₁ = n₁ hc / λ₁
energy emitted/sec by S₂, P₂ = n₂ hc / λ₂
P₂ / P₁ = n₂ / n₁ . λ₁ / λ₂
= 1.02 x 10¹⁵ / 10¹⁵ . 5000 / 5100 = 1.0
Related Questions: - The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- The period of a simple pendulum inside a stationary lift is T. The lift accelerates
- The surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap
- A capacitor having a capacity of 2 μF is charged to 200V and then the plates
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- The period of a simple pendulum inside a stationary lift is T. The lift accelerates
- The surface tension of soap solution is 0.03 N/m. The work done in blowing to form a soap
- A capacitor having a capacity of 2 μF is charged to 200V and then the plates
Topics: Dual Nature of Matter and Radiation (150)
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