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explain the properties of non transparent substances like rock, wood etc.,
425 nm wavelength of light, 200 lux (light intensity)
Light intensity
Light intensity affects voltage because the higher the intensity of light, the more volts are produced. It works exactly the same way in the case of: the lower the light intensity the less volts that are produced.
The color of a star is related with the wavelength of the light observed. Wien's Law states that: Peak Wavelength x Surface Temperature = 2.898x10-3 Peak Wavelength is the wavelength of the highest intensity light coming from a star.
less light intensity gives a better vision
The relationship between light intensity and photosynthetic rate is that if the intensity of the light is high then the rate of photosynthesis will increase. However the rate of photosynthesis will only increase to an extent after intensity of light reaches a certain point photosynthesis rate will stay still.
There is no relationship whatsoever. There are puny lights in both red and violet, and there are overpowering ones of each color too.
explain the properties of non transparent substances like rock, wood etc.,
As light intensity increases then the rate of photosynthesis increases until a point is reached when the rate levels off. Beyond this point is called the light saturation point of photosynthesis.
I assume you are asking in regard to the photoelectric effect. The intensity of the photons can be viewed as the brightness of the light. However, the frequency is the number of wavelengths that pass a certain point in a second. The frequency is also used to determine the energy of the photon (E=hf).
Soft usually refers to the colour shade of the light. Low intensity means that the light is dim.
425 nm wavelength of light, 200 lux (light intensity)
Intensity.
Contrast Ratio
The light intensity is poop!
Measure Light Intensity using Light Dependent Resistor (LDR) The resistance of the Light Dependent Resistor (LDR) varies according to the amount of light that falls on it. The relationship between the resistance RL and light intensity Lux for a typical LDR is RL = 500 / Lux Kohm With the LDR connected to 5V through a 3.3K resistor, the output voltage of the LDR is Vo = 5*RL / (RL+3.3) Reworking the equation, we obtain the light intensity Lux = (2500/Vo - 500)/3.3 For a low cost LDR, at the same light intensity, the part to part variation in resistance can be as high as 50%. Therefore such a low cost LDR is seldom used for measuring light intensity but more for light presence/absence detection.