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The velocity of radio-waves is 3×10⁵ km/s. The frequency corresponding to wavelength of 300 m is
Options
(a) 1 MHz
(b) 10 MHz
(c) 1 kHz
(d) 10 kHz
Correct Answer:
1 MHz
Explanation:
Frequency ʋ = Velocity v / Wavelength λ = v / λ
⇒ ʋ = (3 × 10⁵ × 10³) / 300 = 10⁶ Hz = 1 MHz
Related Questions: - If 20% of a radiactive element decays in 10 days, then amount of original material left
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If 20% of a radiactive element decays in 10 days, then amount of original material left
- The photoelectric threshold wevelength for potassium (work function being 2 eV) is
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- On adjusting the P-N junction diode in forward bias,
- ln a surrounding medium of temperature 10⁰C a body takes 7 min for a fall
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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