Dual Nature of Matter and Radiation MCQs in NEET Exam

Here are some JEE Mains level multiple-choice questions on the dual nature of matter and radiation:

**Question 1:**
Which of the following phenomena can be explained using the dual nature of matter and radiation?
a) Photoelectric effect
b) Ohm’s law
c) Kirchhoff’s law
d) Snell’s law

**Answer 1:**
a) Photoelectric effect

**Question 2:**
In the photoelectric effect, if the frequency of incident light is increased while keeping the intensity constant, the kinetic energy of emitted electrons will:
a) Decrease
b) Increase
c) Remain constant
d) Depend on the work function of the material

**Answer 2:**
b) Increase

**Question 3:**
The threshold frequency for the photoelectric effect depends on:
a) Intensity of incident light
b) Wavelength of incident light
c) Speed of emitted electrons
d) Work function of the material

**Answer 3:**
d) Work function of the material

**Question 4:**
The de Broglie wavelength of a particle with momentum p is given by:
a) λ = h / p
b) λ = p / h
c) λ = h * p
d) λ = p * h

**Answer 4:**
a) λ = h / p

**Question 5:**
Electrons are accelerated through a potential difference V. If the de Broglie wavelength associated with these electrons is increased, what happens to the potential difference required?
a) Increases
b) Decreases
c) Remains the same
d) Becomes zero

**Answer 5:**
a) Increases

**Question 6:**
Which of the following particles exhibits both particle-like and wave-like behavior?
a) Electrons
b) Protons
c) Neutrons
d) Photons

**Answer 6:**
a) Electrons

**Question 7:**
The phenomenon of diffraction is associated with the wave nature of:
a) Electromagnetic waves
b) Sound waves
c) Particle waves
d) All of the above

**Answer 7:**
d) All of the above

**Question 8:**
Which of the following experiments supports the wave nature of particles?
a) Photoelectric effect
b) Compton scattering
c) Davisson-Germer experiment
d) Zeeman effect

**Answer 8:**
c) Davisson-Germer experiment

**Question 9:**
The energy of a photon is directly proportional to its:
a) Frequency
b) Wavelength
c) Momentum
d) Speed

**Answer 9:**
a) Frequency

**Question 10:**
Which of the following statements is true regarding the dual nature of matter and radiation?
a) Electrons are only particles and do not exhibit wave-like behavior.
b) Photons are only waves and do not exhibit particle-like behavior.
c) Both matter and radiation can exhibit both particle-like and wave-like behavior.
d) Neither matter nor radiation exhibits particle-like or wave-like behavior.

**Answer 10:**
c) Both matter and radiation can exhibit both particle-like and wave-like behavior.

Feel free to ask if you need more questions or explanations for any of these questions!