Advertisements
Advertisements
Question
How can the presence of ultraviolet radiation be detected?
Advertisements
Solution
In the presence of ultra-violet radiation, the silver chloride solution becomes dark brown or black.
APPEARS IN
RELATED QUESTIONS
What will happen if another similar glass prism is placed upside down behind the first prism?
Which of the following coloured light has the least speed in glass prism?
(a) violet
(b) yellow
(c) red
(d) green
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
In figure AO is the ray of white light falling on a prism PQR. Complete the diagram till the light emerges out from the prism and falls on the screen.

The phenomenon of splitting of light into its component colours is ___________ .
Answer the following:
What do you mean by dispersion? Name the different colours of light in the proper sequence in the spectrum of light.
What is the cause of the dispersion of white light through a glass prism? Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in an inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the faces of the prisms.
Write the range of wavelength of the infrared spectrum.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent 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.
