Assessment topic 8

1. Who gave the idea of matter wave?

• De-Broglie
• Planck
• Einstein
• Huygen

2. De Broglie equation

• Relates the momentum of a mass to its wavelength
• Relates the energy of a mass to its wavelength
• Relates the frequency of a mass to its wavelength
• Relates the work function of a mass to its wavelength

3. If waves can behave like particles, then particles can behave like a wave. This is the idea behind...

• Quantization of Energy
• Compton Effect
• Photoelectric Effect
• De Broglie Waves

4. Experiments on which of the following suggested the wave nature of electrons?

• the photoelectric effect
• β− decay
• electron diffraction by a crystalline material

5. Only the wave theory of light offers an explanation for the ability of light to exhibit...

• Photo luminescence
• Diffraction
• Reflection
• Illumination

6. The wave-particle duality of light describes light as...

• A wave only
• A particle only
• Both a wave and a particle
• Neither a wave nor a particle

7. What is Planck's Constant?

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8. Velocity of a body of mass m, having de Broglie wavelength λ, is given by

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9. Which of these (having same kinetic energy) has the largest de Broglie wavelength?

• Electron
• Alpha particle
• Proton
• Neutron

10. In an electron microscope, the greater the ___________________, the smaller the field you are actually viewing.

• Detail
• Magnification
• Objective
• Body