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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.
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Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A wheel of mass 10 kg has a moment of inertia of 10 kgm² about its own axis
- To what temperature should the hydrogen at room temperature (27°C) be heated at constant
- Four point masses, each of value m, are placed at the corners of a square ABCD
- An A.C source is rated at 220 V, 50 Hz. The time taken for voltage to change
- A point performs simple harmonic oscillation of period T and the equation of motion
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