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Dual Nature of Matter
NEET Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
The photoelectric effect supports the:
- A. Wave nature of light
- B. Particle (quantum) nature of light
- C. Wave nature of electron
- D. Uncertainty principle
Q2
The work function of a metal is the minimum energy needed to:
- A. Ionize the atom
- B. Eject an electron from metal surface
- C. Break a chemical bond
- D. Excite an electron to higher orbit
Q3
In the photoelectric effect, the maximum kinetic energy of emitted electrons is:
- A. hf
- B. hf − φ
- C. hf + φ
- D. φ/hf
Q4
The de Broglie wavelength of a particle with momentum p is:
- A. λ = p/h
- B. λ = h/p
- C. λ = hp
- D. λ = p²/h
Q5
The threshold frequency in photoelectric effect is the frequency below which:
- A. Photoelectric effect is maximum
- B. No emission occurs regardless of intensity
- C. Electrons are emitted with zero KE
- D. Only one electron is emitted
Q6
Davisson and Germer experiment confirmed:
- A. Particle nature of X-rays
- B. Wave nature of electrons
- C. Photoelectric effect
- D. Nuclear structure
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