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Electromagnetic Waves QUESTIONS AND ANSWERS

Basic Science : Electromagnetic Waves QUESTIONS AND ANSWERS :: part1 : 21 to 25

Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :

21.Double diffraction is exhibited by

glass

gas

calcite

liquid

22.The phenomenon, which proves that light waves are transverse wave is

diffraction

refraction

polarization

total internal reflection

23.For one incident ray there will be generally two refracted rays in double refraction in calcite crystals. Which of the following statement is correct?

Out of two refracted rays one is polarized and the other is not

Both are polarize in the same plane of polarization

Both are polarized, but their planes of polarization are at right angles to each other

Neither is polarized

24.The polarizing angle for glass is about

36.0°

42.0°

57.5°

90.0°

25.If the polarizing angle for glass plate is 60°, then the refractive index of the glass plate is 0.5

0.5

√3/2