When light incident normally on thin film the path difference depends upon ________________?

Related Mcqs:

1. 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

2. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?

   A. πR
   B. 2π R
   C. 0
   D. 4πR

3. Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?

   A. πR
   B. 2πR
   C. 0
   D. 4πR

4. If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from______________?

   A. chromatic aberration
   B. spherical aberration
   C. both spherical and chromatic
   D. distortion

5. A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?

   A. center of curvature
   B. focus
   C. optical center
   D. aperture

6. If a diffraction grating is placed in the path of a light beam it reveals______________?

   A. Wave property
   B. Particle property
   C. Energy particle
   D. Electromagnetic wave property

7. Two coherent sources of light produce interference (destructive) when the phase difference between them is _________?

   A. π
   B. 2π
   C. π/2
   D. π/4

   Submitted by: Rizwan Ayub Saadi

8. Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ?

   A. A & B
   B. B & C
   C. A & C
   D. A B & C

9. Inertia is depends upon only?

   A. Velocity
   B. Direction
   C. Mass
   D. Time

   Submitted by: Chakar Hussain Shar

10. 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