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प्रश्न
Write the range of wavelength of the ultraviolet spectrum.
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उत्तर
The wavelength range for the ultraviolet spectrum is from 100 Å to 4000 Å.
संबंधित प्रश्न
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
What do you understand by the term spectrum?
Refer to fig
(i) Name the lens L.
(ii) What are the points O, O' called?
(iii) Complete the diagram to form the image of the object AB.
(iv) Write three characteristics of the image.
A wave has wavelength 50Å of name the wave.
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
Write three conditions necessary to obtain a pure spectrum on a screen. Name the instrument in which the conditions stated by you are fulfilled.
Write the range of wavelength of the visible spectrum.
Observe the given figure and answer the following questions.
- Which colour light rays bend most?
- Which colour light rays bend least.
- What is the wavelength of violet light rays?
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.
