Q18.The ratio of wavelengths of proton and deuteron accelerated by potential Vp and Vd is 1 : √2 . Then, the ratio of Vp to Vd will be (1) 1 : 1 (2) √2 : 1 (3) 2 : 1 (4) 4 : 1
What This Question Tests
This question tests the relationship between de Broglie wavelength, momentum, mass, and the accelerating potential for charged particles, requiring calculation of the voltage ratio.
Concepts Tested
Formulas Used
λ = h/p
KE = p^2/(2m)
KE = qV
📚 NCERT Sections This Tests
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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?
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11.3 The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
11.10 — What Is The De Broglie Wavelength Of
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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 ?
📋 Question Details
- Chapter
- Dual Nature of Matter
- Topic
- De Broglie Wavelength
- Year
- 2022
- Shift
- 25 Jul Shift 2
- Q Number
- Q18
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Matter
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