A. alternate dark and bright fringes will be seen
B. coloured fringes will be seen
C. no interference fringes will be seen
D. impossible to predict
Related Mcqs:
- In double slit experiment if one of the two slit is covered then________________?
A. no interference fringes are observed
B. no diffraction fringes are observed
C. no fringes observed
D. interference pattern not disturbed - In double slit experiment we observe _____________________?
A. interference fringes only
B. diffraction fringes only
C. both interference and diffraction fringes
D. polirized frringes - A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?
A. 500 mm
B. 5 x 10-3 mm
C. 2 x 10-5 mm
D. 2 x 10-3 mm - Which experiment shows that wavelength of light is smaller than that of sound___________________?
A. Diffraction
B. Polarization
C. Interference
D. Reflection - 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 - Davison Germer experiment indicates__________________?
A. Interference
B. Polarization
C. Electron diffraction
D. Refraction - In Davisson-Germer experiment the diffracted proton from crystal shows______________?
A. Particle property
B. Wave property
C. Light property
D. Quantum property - The velocity of sound in air would become double than its velocity at 0°C at temperature ?
A. 313°C
B. 586°C
C. 819°C
D. 1172°C - The velocity of sound in air would become double than its velocity at 0°C at temperature________________?
A. 313°C
B. 586°C
C. 819°C
D. 1172°C - When the amplitude of a wave becomes double its energy become_________________?
A. Double
B. Four times
C. One half
D. None time
