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The frequency of light ray having the wavelength 3000Å is
Options
(a) 9×10¹³ cycle/sec
(b) 10¹⁵ cycle/sec
(c) 90 cycle/sec
(d) 3000 cycle/sec
Correct Answer:
10¹⁵ cycle/sec
Explanation:
n = v / λ = 3 × 10⁸ / 3000 × 10⁻¹° = 10¹⁵ cycle/sec.
Related Questions: - Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
- The potential energy of a system increases if work is done
- Light is emitted when
- Source S₁ is producing, 10¹⁵ photons per second of wavelength 5000Å
- RMS velocity of gas is proportional to
Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial.
- The potential energy of a system increases if work is done
- Light is emitted when
- Source S₁ is producing, 10¹⁵ photons per second of wavelength 5000Å
- RMS velocity of gas is proportional to
Topics: Wave Optics (101)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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Answer is wrong. should be 10(to power 17)/s