Q71.Which of the following radiations has the least wavelength? (1) γ -rays (2) β-rays (3) α-rays (4) X-rays
What This Question Tests
This question assesses knowledge of the electromagnetic spectrum to identify the radiation with the shortest wavelength.
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.
11.8 — Light Of Frequency 7.21 × 1014 Hz Is Incident On A Metal Surface.
Physics Class 12 · Chapter 11
11.8 Light of frequency 7.21 × 1014 Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 × 105 m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?
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
- EM Waves
- Topic
- Electromagnetic spectrum
- Year
- 2003
- Shift
- Unknown
- Q Number
- Q71
- Type
- Conceptual
- NCERT Ref
- Class 12 Physics Ch 8: Electromagnetic Waves
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