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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
- The work function of a substance is 4.0 eV. The longest wavelength of light
- The temperature of a metal block is increased from 27⁰C to 84⁰C. The rate of radiated energy
- If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
- An object is projected with a velocity of 20 m/s making an angle of 45⁰ with horizontal.
- A body oscillates with amplitude of 10 cm in a horizontal platform.
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