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Is the stopping voltage doubled or more than doubled if frequency of lightwave is doubled under the condition where intensity is constant?
Wiki User
∙ 14y ago
More than doubled.
The stopping voltage is the photon energy minus the work function:
hv - W
Doubling the photon energy creates a new stopping voltage of:
2 hv - W > 2 (hv - W)
Wiki User
∙ 14y ago
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What happens to the intensity of a wave if the amplitude decreases?
Intensity of a wave is proportional to the frequency squared and amplitude squared based on this formula; I=1/2pw^2A^2V where p is the density of the medium, w is the angular frequency and A is the amplitude and V is the wave velocity. So, everything else remaining constant, decreasing the amplitude will decrease a waves intensity. Example decreasing the the amplitude by a factor of 4 will decrease the wave intensity by a factor of 8.
On AM broadcasts what remains constant?
the frequency!:-)
How are wavelength frequency intensity and energy related in an electromagnetic wave?
E = h f (relation of energy with frequency) E = h c / λ (relation of energy with wavelength) h = Planck's constant ≈ 6.026 × 10⁻³⁴ J.s c = speed of light = 299,792,458 m/s in vacuum ≈ 3.0 × 10⁸ m/s
How are wave speed frequency and wave length related to the wave amplitude?
Frequency is the amount of bumps there are in the wave. The higher the frequency the lower the wave length and vise versa. some equations are E=hv C=vw h=Plancks Constant(6.626x10 to the -34) C=3.0x10 to the power of 8
Why does a shaded pole motor run at constant speed?
The frequency of the applied voltage is constant.
In the Photoelectric effect after the threshold frequency what effect does the increased frequency have on the photocurrent If you assume the Intensity of the source to be constant?
The increased frequency increases the kinetic energy of the single electron ejected. Remember that the incident light releases a single electron when the threashod frequency is reached
Why transformer frequency is constant?
In transformer there is no rotating part.so frequency constant.
How does light intensity affect the stopping potential?
It doesn't, from the equation E = h*f (E is energy, h is Planck's constant, f is frequency) you can clearly see that energy is a function of frequency, not amplitude (intensity). Therefore, it doesn't even matter what the relationship between stopping potential and energy is, because it will only depend on frequency, which is sufficient knowledge to answer this question.
What happens to the intensity of a wave if the amplitude decreases?
Intensity of a wave is proportional to the frequency squared and amplitude squared based on this formula; I=1/2pw^2A^2V where p is the density of the medium, w is the angular frequency and A is the amplitude and V is the wave velocity. So, everything else remaining constant, decreasing the amplitude will decrease a waves intensity. Example decreasing the the amplitude by a factor of 4 will decrease the wave intensity by a factor of 8.
On AM broadcasts what remains constant?
the frequency!:-)
What factors frequency depends on?
The frequency depends on what the frequency is of. A pendulum or other simple harmonic motion has a constant frequency, a Poisson event has a variable frequency, although the long term average is a constant.
How are wavelength frequency intensity and energy related in an electromagnetic wave?
E = h f (relation of energy with frequency) E = h c / λ (relation of energy with wavelength) h = Planck's constant ≈ 6.026 × 10⁻³⁴ J.s c = speed of light = 299,792,458 m/s in vacuum ≈ 3.0 × 10⁸ m/s
How does wavelength change when frequency is constant?
the wavelength changes when the frequency changes if the wavelengths are smaller and thinner then the frequency is high, when the frequency is slow then the wavelengths is larger and wider. if the frequency is constant then the wavelength is a normal size
How are wave speed frequency and wave length related to the wave amplitude?
Frequency is the amount of bumps there are in the wave. The higher the frequency the lower the wave length and vise versa. some equations are E=hv C=vw h=Plancks Constant(6.626x10 to the -34) C=3.0x10 to the power of 8
How are the frequency and the wavelength of a wave traveling at a constant speed related?
frequency = speed of wave / wavelength so if speed is constant then frequency varies inversely with wavelength
Why does coherent light have a relatively constant intensity?
Coherence relates to the physics of waves. Specifically, it refers to a property that allows constant interference. Because interference varies the intensity of light, coherent light has a relatively stable intensity.
How does energy related to frequency?
The photon energy is directly proportional to its frequency: Energy = Planck's constant * frequency.
