Q30.For sky wave propagation, the radio waves must have a frequency range in between: (1) 1MHz to 2MHz (2) 5MHz to 25MHz (3) 35MHz to 40MHz (4) 45MHz to 50MHz
What This Question Tests
This conceptual question assesses knowledge of the specific frequency range suitable for sky wave propagation, which relies on reflection from the ionosphere.
Concepts Tested
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
12.3 — A Difference Of 2.3 Ev Separates Two Energy Levels In An Atom. What
Physics Class 12 · Chapter 12
12.3 A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
11.7 — The Work Function For A Certain Metal Is 4.2 Ev. Will This Metal Give
Physics Class 12 · Chapter 11
11.7 The work function for a certain metal is 4.2 eV. Will this metal give hotoelectric emission for incident radiation of wavelength 330 nm?
📋 Question Details
- Chapter
- Communication Systems
- Topic
- Sky wave propagation
- Year
- 2014
- Shift
- 12 Apr Online
- Q Number
- Q30
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 15: Communication Systems
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