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प्रश्न
Write the range of wavelength of the infrared spectrum.
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उत्तर
The wavelength range for the infrared spectrum is from 7900 Å to 107 Å.
संबंधित प्रश्न
In the following diagram, the path of a ray of light passing through a glass prism is shown:
In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option):
(A) X, R and T
(B) Y, Q and T
(C) X, Q and P
(D) Y, Q and P
Describe an activity to show that colours of white light splitted by a glass prism can be recombined to get white light by another identical glass prism. Also draw ray diagram to show the recombination of the spectrum of white light.
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
Out of air and glass, which is optically rarer? Give reason.
A student has to trace the path of a ray of light through a glass prism. List four precautions he should observe for better results.
Say TRUE or FALSE
Rainbow is formed by dispersion of which light by water drops
dispersive power of crown glass? Given that µv = 1.5230, µr = 1.5145
State True or False:
"Wavelength of red light is close to 700 nm.”
Make a rainbow
Try to make your own rainbow. You can try this project in the morning or in the evening. Stand with your back towards the Sun. Take a hosepipe or a water pipe used in the garden. Make a fine spray in front of you. You can see different colours of rainbow in the spray.
