Advertisements
Advertisements
प्रश्न
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Advertisements
उत्तर
The spectrum is the colour band obtained on a screen when white light passes through a prism. The seven prominent colours obtained in the spectrum of white light, in order are Violet, Indigo, Blue, Green, Yellow, Orange, and Red.
APPEARS IN
संबंधित प्रश्न
How could you show that the colours of the spectrum combine to give white light?
Which of the following colour of white light is least deviated by the prism?
(a) green
(b) violet
(c) indigo
(d) yellow
Out of the following, the colour of light having the maximum wavelength is:
(a) violet
(b) indigo
(c) green
(d) orange
When a white light ray falls on a prism, the ray at its first surface suffers ______.
An object AB is placed in front of a convex lens as shown in fig. 4. Complete the ray diagram and obtain the image formed and state the nature of the image.
The phenomenon of splitting of light into its component colours is ___________ .
Match the Columns:
| Column ‘A’ | Column ‘B’ |
| The wavelength of red light | (a) 600 nm |
| (b) 700 nm | |
| (c) 500 nm |
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
Assertion: We can see the rainbow in the sky when the rain starts falling after a spell of bright sunlight.
Reason: The rainbow is formed due to the dispersion of light.
