Advertisements
Advertisements
प्रश्न
Which is optically denser: water or air? Give reason
Advertisements
उत्तर
Denser medium are those in which speed of light gets reduced when light travels through that medium.
when light travels through water or glass it's speed get reduced hence they are optically denser medium.
WATER is optically DENSER as the speed of light is less in water than in air.
2.25 × 108 ms-1 < 3 × 108 ms-1
speed of light in Water < speed of light in Air.
APPEARS IN
संबंधित प्रश्न
State the cause of dispersion of white light passing through a glass prism. How did Newton show that white light of sun contains seven colours using two identical glass prisms. Draw a ray diagram to show the path of light when two identical glass prisms are arranged together in inverted position with respect to each other and a narrow beam of white light is allowed to fall obliquely on one of the focus of the first prism.
(i) A ray of white light breaks up into its components while passing through a glass prism. Draw a ray diagram to show the path of rays.
(ii) Mark the least deviated colour in your diagram
(iii) Why do different coloured rays deviate differently in a prism?
In the formation of spectrum of white light by a prism:
which colour is deviated most?
The seven colours in the spectrum of sunlight in order, are represented as :
Out of air and glass, which is optically rarer? Give reason.
A wave has wavelength 50Å of name the wave.
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.
In the diagram, a narrow beam of white light is incident on a right-angled isosceles prism. The critical angle of the material of prism for the yellow colour of white light is 45°. Complete the diagram to show the path of blue, yellow, and red colours of white light till they emerge out of the prism.
Observe the given figure and write appropriate phenomenon of light in the box.
The sunlight can be split into its constituent colors using ______.
