Advertisements
Advertisements
Question
Why is the ratio of the velocities of light of wavelengths 4000Å and 8000Å in vacuum 1: 1?
Solution
In vacuum light or any electromagnetic wave velocity is always constant 3 × 108 m/s and it does not depend on wavelength or frequency.
APPEARS IN
RELATED QUESTIONS
Explain how spectrum is formed.
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
How is the refractive index of a medium related to the speed of light in it?
For which colour of white light, is the refractive index of a transparent medium the most?
A ray of light falls normally on the surface of a transparent glass slab. Draw a ray diagram to show its path and also mark angle of incidence and angle of emergence.
Observe the figure and write accurate conclusion regarding refraction of light.
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) what is the XX' called?
(iii) Complete the ray diagram and show the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. what is the point called?
Why upper surface of water contained in a beaker and above eye level appears silvery?
What is the refractive index of water
