Advertisements
Advertisements
प्रश्न
A monochromatic ray of light passes from air to glass. The wavelength of light in air is λ, the speed of light in air is c and in glass is V. If the absolute refractive index of glass is 1.5, write down
- the relationship between c and V,
- the wavelength of light in glass.
Advertisements
उत्तर
aμg = 1.5, aμg = `"speed of light in air"/"speed of light in glass" = c/V`
- μ or c = aμg × V = 1.5 V
- aμg = `"wave length of light in air"/"wave length of light in glass"`
∴ wave length of light in glass = `λ/ 1.5`
APPEARS IN
संबंधित प्रश्न
Define refraction and state the laws of refraction.
The following diagram shows a 60°, 30°, 90° glass prism of critical angle 42°, Copy the diagram and complete the path of incident ray AB emerging out of the prism marking the angle of incidence on each surface.
How can you bend light away from the normal?
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.
(i) What is the relation between the refractive index of water with respect to air `("_aμ_\text(w))` and the refractive index of air with respect to water `("_\text(w)μ_ a)` .
(ii) If the refractive index of water with respect to air `("_aμ_\text(w))` is`5/3`. Calculate the refractive index of air with respect to water `("_\text(w)μ_ a)` .
In the fig. name the ray which represents the correct path of light while passing through a glass block.
Draw an í- `delta` graph for a mono chromatic raY through a glass prism of a plane and mark
(i) `delta` m, the angle of mínimum devíation
(íí) Any two values of i for which value of `delta` ís same.
A ray of light strikes the surface at a rectangular glass slab such that the angle of incidence is 45o.
In each case, draw diagram to show the path taken by the ray as it passes through the glass slab and emerges from it.
What is meant by the refraction of light?
