Dual Nature of Radiation and Matter - Class XII Physics Quiz

Class XII

Physics

Dual Nature of Radiation and Matter

14 questions

HARD

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Preview questions

1. What phenomenon demonstrates the particle nature of light?

Photoelectric effect · Diffraction · Interference · Refraction

2. Which equation relates the energy of a photon to its frequency?

E = mc² · E = hf · E = mv² · E = 1/2 mv²

3. What is the threshold frequency in the photoelectric effect?

Frequency below which no electrons are emitted · Frequency at which maximum current is observed · Frequency at which light is completely absorbed · Frequency equal to the energy of the photon

4. What is the work function of a material?

Energy required to remove an electron · Energy of a photon · Energy to excite an electron · Energy of emitted electrons

5. In the photoelectric effect, increasing the intensity of light increases which of the following?

Kinetic energy of emitted electrons · Number of emitted electrons · Wavelength of light · Work function

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