In the shadow of a ball the central portion appears bright that happens due to_________________?
A. Interference
B. Diffraction
C. Polarization
D. Refraction
Physics Mcqs
In double slit experiment if one of the two slit is covered then________________?
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 monochromatic red light a blue book will probably appear to be_________________?
In monochromatic red light a blue book will probably appear to be_________________?
A. black
B. purple
C. green
D. no scientific reasoning available
Which one of the following cannot be polarized ?
Which one of the following cannot be polarized ?
A. radio waves
B. ultraviolot rays
C. X-rays
D. sound waves
In a plane polarized light _________________?
In a plane polarized light _________________?
A. vibration in all direction
B. vibration in two mutually perpendicular directions
C. vibration take place in a direction perpendicular to the direction of propagation of light
D. no vibration at all
Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?
A. 4 x 10-10 m
B. 2 x 10-10 m
C. 0.02×10-10m
D. 20×10-10m
When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?
When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?
A. 5000 nm
B. 5000A
C. 500m
D. 2000um
The blue colour of the sky is due to___________________?
The blue colour of the sky is due to___________________?
A. diffraction
B. reflection
C. polarization
D. scattering
In an interference pattern______________________?
In an interference pattern______________________?
A. bright fringes are wider than dark fringes
B. dark fringes are wider than bright fringe
C. both dark and bright fringes are of equal width
D. central fringes are brighter than the outer fringes
In Young double slit experiment, if white light is used____________________?
In Young double slit experiment, if white light is used____________________?
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