Q17.If a source of electromagnetic radiation having power 15 kW produces 1016 photons per second, the radiation belongs to a part of spectrum is : (Take Planck constant โ = 6 ร 10-34 J s) (1) Micro waves (2) Ultraviolet rays (3) Gamma rays (4) Radio waves
What This Question Tests
This question tests the fundamental understanding of the wave nature of electrons, specifically acknowledging the Davisson-Germer experiment as its experimental verification.
Concepts Tested
๐ NCERT Sections This Tests
11.4 โ Monochromatic Light Of Wavelength 632.8 Nm Is Produced By A
Physics Class 12 ยท Chapter 11
11.4 Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?
12.3 โ A Difference Of 2.3 Ev Separates Two Energy Levels In An Atom. What
Physics Class 12 ยท 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?
12.5 โ A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 ยท 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.
๐ Question Details
- Chapter
- Dual Nature of Matter
- Topic
- Wave nature of electrons
- Year
- 2023
- Shift
- 31 Jan Shift 1
- Q Number
- Q17
- Type
- Assertion Reasoning
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Radiation and Matter
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