BCECE SERIES Physics
Wave Optics
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
3
2022 1
2010 Chapter Questions 4 MCQs
01
PYQ 2010
medium
physics ID: bcece-20
Angular width of central maxima in the Fraunhofer's diffraction pattern is measured. Slit is illuminated by the light of wavelength 6000 . If slit is illuminated by light of another wavelength, angular width decreases by 30%. Wavelength of light used is
1
3500
2
4200
3
4700
4
6000
02
PYQ 2022
hard
physics ID: bcece-20
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that the 9th bright fringe in the medium lies where the 5th dark fringe lies in the air, then the refractive index of the medium is:
1
1.43
2
1.63
3
1.5
4
1.7
03
PYQ 2022
easy
physics ID: bcece-20
The resolving power of a telescope is directly proportional to:
1
The frequency of light used
2
Square of the frequency of light used
3
The wavelength of light used
4
Square the wavelength of light used
04
PYQ 2022
medium
physics ID: bcece-20
The velocity of light in a medium is √3 108m/s. The polarizing angle of incidence is:
1
30°
2
60°
3
45°
4
tan-1 (3)