A light ray traveling form rarer to denser medium suffers a phase change of__________________?

Related Mcqs:

1. After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?

   A. Increases because wavelength decreases
   B. Decreases because speed decreases
   C. Remains same
   D. Increases then decrease

2. Which one of the following properties of light does not change with the nature of the medium ?

   A. velocity
   B. wavelength
   C. amplitude
   D. frequency

3. A point source of light placed in a homogeneous medium gives rise to ___________________?

   A. a cylindrical wave front
   B. an elliptical wave front
   C. a spherical wave front
   D. a plane wave front

4. According to Einstein light travels form one place to another in the form of ________________?

   A. waves
   B. particles
   C. photons
   D. it was not his discovery

5. The locus of all points in a medium having the same phase of vibration is called____________________?

   A. crest
   B. trough
   C. wavelength
   D. wave front

6. Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?

   A. 2.5
   B. 2.0
   C. 1.75
   D. 1.5
   E. 1.25

   Submitted by: Mansoor Ul Haque

7. When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?

   A. decreases
   B. increases
   C. remains unchanged
   D. becomes zero

8. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

9. The linear momentum of an X-ray photon of wavelength 0.1A is_______________?

   A. 6.625x1023N-s
   B. 66.25x1023N-s
   C. 662.5x1023N-s
   D. data is insufficient

10. X-ray are________________?

    A. of unknown nature
    B. high energy electrons
    C. high energy photons
    D. radio isotopes