Choose the incorrect statementa)In Rayleigh scattering, amount of scattering is inversely proportional to fourth power of wavelength.b)Secondary rainbow is fainter than primary atmosphere.c)Light of red colour is scattered most in atmosphere.d)In reflecting telescope, parabolic mirror can be used as an objective to remove the spherical aberration.Correct answer is option 'C'. Can you explain this answer?

Question

Answer

According to Rayleigh's law as given in option a, amount of scattering is inversely proportional to the fourth power of wavelength. Red light have longest wavelength among the seven colours of VIBGYOR.so,it would be least scattered.so, option c is wrong statement.

Answer

Compared to blue light, violet light is most easily scattered by atmospheric particles. However, our eyes are more sensitive to light with blue frequencies. Thus, we view the skies as being blue in color. Hence the most scattered is blue not red

Answer

Explanation:

The incorrect statement is option 'c' which states that 'Light of red colour is scattered most in atmosphere.' This statement is incorrect because the scattering of light in the atmosphere is actually more significant for shorter wavelengths, such as blue and violet light.

Rayleigh Scattering:

Rayleigh scattering is the scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. In Rayleigh scattering, the amount of scattering is inversely proportional to the fourth power of the wavelength. This means that shorter wavelengths, such as blue and violet light, are scattered more than longer wavelengths, such as red and orange light. This is the reason why the sky appears blue during the day, as the shorter blue and violet wavelengths are scattered more by the atmosphere.

Primary and Secondary Rainbow:

A rainbow is a meteorological phenomenon that is caused by reflection, refraction, and dispersion of light. The primary rainbow is the brightest and most commonly observed rainbow, which occurs when sunlight is reflected and refracted within raindrops. The secondary rainbow is fainter and occurs when the light undergoes two internal reflections within the raindrop.

Refraction and Dispersion of Light:

When light enters a medium with a different refractive index, such as air to water or vice versa, it changes direction. This phenomenon is known as refraction. When light is refracted, it also undergoes dispersion, which is the separation of light into its component colors. This is why rainbows are formed as the sunlight is refracted and dispersed by raindrops.

Scattering of Light in the Atmosphere:

The scattering of light in the atmosphere is influenced by various factors, including the size of the particles and the wavelength of the light. The scattering of light by small particles, such as gas molecules and small dust particles, is known as Rayleigh scattering. As mentioned earlier, Rayleigh scattering is more significant for shorter wavelengths, such as blue and violet light. This is why the sky appears blue during the day, as the shorter blue and violet wavelengths are scattered more by the atmosphere.

Conclusion:

In conclusion, the incorrect statement is option 'c' which states that 'Light of red colour is scattered most in the atmosphere.' The scattering of light in the atmosphere is actually more significant for shorter wavelengths, such as blue and violet light.

Answer

Since amount of scattering

Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

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