हिंदी

Why is the Ratio of the Velocities of Light of Wavelengths 4000å and 8000å in Vacuum 1: 1?

Advertisements
Advertisements

प्रश्न

Why is the ratio of the velocities of light of wavelengths 4000Å and 8000Å in vacuum 1: 1?

Advertisements

उत्तर

In vacuum light or any electromagnetic wave velocity is always constant 3 × 108 m/s and it does not depend on wavelength or frequency.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2017-2018 (March) Set A

संबंधित प्रश्न

When rays of light are incident on a glass slab then the incident ray and emergent ray are _________ each other.

  1. perpendicular
  2. parallel
  3. opposite
  4. concurrent

Draw a ray diagram to show the refraction of light through a glass slab and mark angle of refraction and the lateral shift suffered by the ray of light while passing through the slab.


Name the colour of white light which is deviated the most on passing through a prism. 


Trace the path of a ray of light incident at an angle of 45° on a rectangular glass slab. Write the measure of the angle of refraction, the angle of emergence and the lateral displacement suffered by the ray as it passes through the slab. 


While performing the experiment on tracing the path of a ray of light through a rectangular glass slab, in which of the following experimental set-ups is a student likely to get best results? P1 and P2 are the positions of pins fixed by him.

(A) I

(B) II

(C) III

(D) IV


A ray of light is incident normally on a plane glass slab. What will be
    1. the angle of refraction and
    2. the angle of deviation for the ray?

Why does the sun appear bigger during sunset or sunrise?


The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.

Show with the help of a ray diagram the path of the ray when incident ray normally falls on the first surface of the glass block and passes through the block and the liquid.


The speed of light in air is 3 × 10ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.


Draw the ray diagram of a glass slab having medium A and B for the velocity of light ray VA and VB respectively and define Snell's law.

  1. If VB = 1.5 VA, then which medium is denser?
  2. What is the refractive index of A with respect to B?
  3. What is the refractive index of B with respect to A?

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×