WBJEE-JENPAS-UG SERIES Physics
Waves
1 previous year questions.
Volume: 1 Ques
Yield: Medium
High-Yield Trend
1
2023 Chapter Questions 1 MCQs
01
PYQ 2023
medium
physics ID: wbjee-je
A ray of light of wavelength λ incident at an angle 45° on the surface of a slab of ice of thickness 1 m is refracted into it at an angle of 30°. Speed of light in vacuum is c m/s. Then which of the following statement(s) is/are correct?
1
Refractive index of ice is √2.
2
Wavelength of light in ice is λ√2.
3
Speed of light in ice is m/s.
4
Time taken by the light ray to cross the ice-slab is sec.