⇦ | ⇨ |
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: - What is the nature of Gaussian surface involved in Gauss’s law of electrostatics?
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Length of a string tied to two rigid supports is 40 cm. Maximum length
- A black body is at 727⁰C. It emits energy at a rate which is proportional to
- A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- What is the nature of Gaussian surface involved in Gauss’s law of electrostatics?
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
- Length of a string tied to two rigid supports is 40 cm. Maximum length
- A black body is at 727⁰C. It emits energy at a rate which is proportional to
- A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
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