Q16.The de Broglie wavelength of a proton and α -particle are equal. The ratio of their velocities is (1) 4 : 1 (2) 4 : 3 (3) 1 : 4 (4) 4 : 2
What This Question Tests
This question tests the application of the de Broglie wavelength formula to calculate the ratio of velocities of different particles when their de Broglie wavelengths are equal.
Concepts Tested
Formulas Used
λ = h/p = h/mv
📚 NCERT Sections This Tests
11.10 — What Is The De Broglie Wavelength Of
Physics Class 12 · Chapter 11
11.10 What is the de Broglie wavelength of (a) a bullet of mass 0.040 kg travelling at the speed of 1.0 km/s, (b) a ball of mass 0.060 kg moving at a speed of 1.0 m/s, and (c) a dust particle of mass 1.0 × 10–9 kg drifting with a speed of 2.2 m/s ?
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.
12.7 — The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 · Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
📋 Question Details
- Chapter
- Dual Nature of Matter
- Topic
- de Broglie wavelength
- Year
- 2021
- Shift
- 24 Feb Shift 2
- Q Number
- Q16
- Type
- Numerical
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Radiation and Matter
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