NEET UG PHYSICS Multiple Choice Questions (MCQs)
NEET UG Physics - Dual Nature of Matter and Radiation MCQs (241-255)
-
1. The dual nature of radiation implies that light behaves as both:
- a) Wave and particle
- b) Particle and sound
- c) Wave and mass
- d) None of the above
Answer: a) Wave and particle
-
2. Which of the following experiments provides evidence for the particle nature of light?
- a) Diffraction of light
- b) Interference of light
- c) Photoelectric effect
- d) Polarization of light
Answer: c) Photoelectric effect
-
3. The work function of a metal is defined as the energy required to:
- a) Ionize the metal
- b) Eject an electron from the metal
- c) Excite an electron in the metal
- d) Heat the metal
Answer: b) Eject an electron from the metal
-
4. In the photoelectric effect, the kinetic energy of the emitted electron depends on:
- a) The frequency of the incident light
- b) The intensity of the incident light
- c) The work function of the metal
- d) Both a and c
Answer: d) Both a and c
-
5. Einstein's photoelectric equation is given by:
- a) E = hν - φ
- b) E = hν + φ
- c) E = h/ν - φ
- d) E = hν
Answer: a) E = hν - φ
-
6. The photoelectric effect can be explained by considering light as:
- a) A wave
- b) A particle
- c) A form of energy
- d) A gas
Answer: b) A particle
-
7. Hertz and Lenard’s observations on the photoelectric effect led to the conclusion that:
- a) Light is a continuous wave
- b) Light behaves as a particle in some situations
- c) Electrons are emitted due to the heating effect of light
- d) Only ultraviolet light can cause the photoelectric effect
Answer: b) Light behaves as a particle in some situations
-
8. The de Broglie hypothesis suggests that:
- a) Particles exhibit both wave and particle properties
- b) Waves can be treated as particles
- c) The speed of light is constant
- d) Matter has no wave nature
Answer: a) Particles exhibit both wave and particle properties
-
9. The de Broglie wavelength associated with a particle is given by the relation:
- a) λ = h/mv
- b) λ = mv/h
- c) λ = h/m
- d) λ = mv
Answer: a) λ = h/mv
-
10. Matter waves are:
- a) Waves associated with particles
- b) Electromagnetic waves
- c) Mechanical waves
- d) Radio waves
Answer: a) Waves associated with particles
-
11. In the photoelectric effect, the maximum kinetic energy of the emitted electron depends on:
- a) The frequency of the incident light
- b) The intensity of the incident light
- c) The time duration of light exposure
- d) The temperature of the metal
Answer: a) The frequency of the incident light
-
12. The threshold frequency for the photoelectric effect corresponds to the minimum:
- a) Wavelength of light
- b) Energy of light
- c) Frequency of light required to emit electrons
- d) Speed of electrons emitted
Answer: c) Frequency of light required to emit electrons
-
13. Which of the following statements is true according to de Broglie’s relation?
- a) The wavelength of an electron is inversely proportional to its momentum
- b) The wavelength of an electron is directly proportional to its speed
- c) The momentum of a particle is inversely proportional to its wavelength
- d) Particles do not exhibit wave properties
Answer: a) The wavelength of an electron is inversely proportional to its momentum
-
14. The concept of matter waves was experimentally confirmed by:
- a) Young’s double-slit experiment
- b) Davisson and Germer's electron diffraction experiment
- c) Rutherford’s gold foil experiment
- d) Einstein’s photoelectric experiment
Answer: b) Davisson and Germer's electron diffraction experiment
-
15. The energy required to release an electron from the surface of a metal is called:
- a) Kinetic energy
- b) Work function
- c) Potential energy
- d) Binding energy
Answer: b) Work function
<< Previous Page l Next Page >>
Note/Caution: studentsbizz.com does not promise a job or an interview in exchange for money. Fraudsters may ask you to pay under the pretext of a registration fee or refundable fee, but please be aware that legitimate employers will not require such payments.
Join in Our Groups
@ 2025 Students Bizz Platform. All Rights Reserved.