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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 particle starts its motion from rest under the action of a constant force
- A 120 m long train is moving in a direction with speed 20 m/s.A train B moving
- A body of mass 0.25 kg is projected with muzzle velocity 100 m/s from a tank
- Across a metallic conductor of non-uniform cross-section, a constant potential
- A body has 80 microcoulomb of charge. Number of additional electrons in it will be
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