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Can you explain the answer of this question below:
Light from a bulb is falling on a wooden table but no photo electrons are emitted as
  • A:
    Work function of wood is less
  • B:
    Work function of wood is more
  • C:
    It depends on the frequency
  • D:
    It is independent of work function
The answer is b.
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Can you explain the answer of this question below:Light from a bulb is...
Explanation:

When light falls on a metal surface, electrons may be emitted from the metal surface. This phenomenon is known as the photoelectric effect. The electrons emitted from the metal surface are called photoelectrons.

The photoelectric effect can be explained by considering that light is made up of photons. Each photon has a certain amount of energy, given by its frequency. When a photon strikes a metal surface, its energy can be transferred to an electron in the metal. If the energy of the photon is greater than the work function of the metal, the electron can be emitted from the metal surface.

In the case of a wooden table, the work function of the wood is more than the energy of the photons of the light falling on it. Therefore, no photoelectrons are emitted. This is because the energy of the photons is not enough to overcome the work function of the wood.

Key Points:

- The photoelectric effect is the emission of electrons from a metal surface when light falls on it.
- The energy of a photon is given by its frequency.
- If the energy of a photon is greater than the work function of the metal, electrons can be emitted from the metal surface.
- In the case of a wooden table, the work function of the wood is more than the energy of the photons of the light falling on it, so no photoelectrons are emitted.
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Can you explain the answer of this question below:Light from a bulb is...
The minimum energy required to emit electrons from a surface is called as work function. if given energy is less than the work function then electrons will not emit from the surface. but if the given energy is higher than the work function then electrons will be emitted.For wood table work function is very very high and also the frequency emitted from bulb is in visible region so it is practically impossible for electrons to be emitted. hope it would help....
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Can you explain the answer of this question below:Light from a bulb is falling on a wooden table but no photo electrons are emitted asA:Work function of wood is lessB:Work function of wood is moreC:It depends on the frequencyD:It is independent of work functionThe answer is b.
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Solutions for Can you explain the answer of this question below:Light from a bulb is falling on a wooden table but no photo electrons are emitted asA:Work function of wood is lessB:Work function of wood is moreC:It depends on the frequencyD:It is independent of work functionThe answer is b. in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
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