Q16.An α particle and a proton are accelerated from rest by a potential difference of 200 V . After this, their de Broglie wavelengths are λα and λp respectively. The ratio λαλp is : (1) 8 (2) 3. 8 (3) 2. 8 (4) 7. 8
What This Question Tests
This problem involves comparing the de Broglie wavelengths of an alpha particle and a proton accelerated through the same potential difference, requiring calculation of their kinetic energy and momentum.
Concepts Tested
Formulas Used
λ = h/p
p = √(2mK)
K = qV
📚 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 ?
12.4 — The Ground State Energy Of Hydrogen Atom Is –13.6 Ev. What Are The
Physics Class 12 · Chapter 12
12.4 The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
12.8 — A 12.5 Ev Electron Beam Is Used To Bombard Gaseous Hydrogen At
Physics Class 12 · Chapter 12
12.8 A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?
📋 Question Details
- Chapter
- Dual Nature of Matter
- Topic
- De Broglie Wavelength
- Year
- 2021
- Shift
- 25 Feb Shift 1
- Q Number
- Q16
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Radiation and Matter
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