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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 bulbs when connected in parallel to a source take 60W each, the power consumed,
- The potential energy of a long spring when stretched by 2 cm is U.
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
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Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two bulbs when connected in parallel to a source take 60W each, the power consumed,
- The potential energy of a long spring when stretched by 2 cm is U.
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- Characteristic X-rays are produced due to
- A capacitor of capacitance value 1 μF is charged to 30 V and the battery
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