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What is the angle between the plane of p...

What is the angle between the plane of polarisation and the direction of propagation of beam of plane polarised light ?

A

`0^(@)`

B

`45^(@)`

C

`180^(@)`

D

`90^(@)`

Text Solution

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The correct Answer is:
A
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Huygen was the figure scientist who proposed the idea of wave theory of light he said that the light propagates in form of wavelengths. A wavefront is a imaginary surface of every point of which waves are in the same. phase. For example the wavefront for a point source of light is collection of concentric spheres which have centre at the origin w_(1) is a wavefront w_(2) is another wavefront. The radius of the wavefront at time 't' is 'ct' in thic case where 'c' is the speed of light the direction of propagation of light is perpendicular to the surface of the wavelength. the wavefronts are plane wavefronts in case of a parallel beam of light. Huygen also said that every point of the wavefront acts as the source of secondary wavelets. The tangent drawn to all secondary wavelets at a time is the new wavefront at that time. The wavelets are to be considered only in the forward direction (i.e., the direction of propagation of light) and not in the reverse direction if a wavefront w_(1) and draw spheres of radius 'cDeltat' they are called secondary wavelets. Draw a surface w_(2) which is tangential to all these secondary wavelets w_(2) is the wavefront at time t+Deltat Huygen proved the laws of reflection and laws of refraction using concept of wavefront. Q. Certain plane wavefronts are shown in figure the refractive index of medius is

What changes during the polarisation of light?

KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. What will be angle of first order maxima obtained by Fraunhoffer diffr...

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  2. The width of fringes ...... as the Young's double slit experiment move...

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  3. What is the angle between the plane of polarisation and the direction ...

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  4. In Young's double slit experiment, the intensity at a point P on the s...

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  5. In a two tourmalines experiment, the polariser and analyser are crosse...

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  6. In a arrangement of Young experiment the central fringe of interferenc...

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  7. Two beams of light of intensity I(1), and I(2)interfere to give an int...

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  8. In Young's double slit experiment if the width of 4^(th) bright fringe...

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  9. The diameter of the pupil of human eye is 2.5 mm. Assuming the wavelen...

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  10. Unpolarised light falls first on polarizer Pan then on analyzer A. If ...

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  11. A plane polarized light is incident normally on a tourmaline plate. It...

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  12. Light of wavelength lambda is incident on slit of width d. The resulti...

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  13. If the wavelength of light is 4000 A, then the number of waves in 1 mm...

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  14. Velocity of electromagnetic wave having wavelength 5000 Å in medium of...

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  15. A diffraction pattern is formed by blue light, if blue light is replac...

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  16. In Fraunhoffer diffraction by a single slit, the width of the slit is ...

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  17. In Young's double slit experiment if the distance between two slits is...

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  18. If the wavelength of light used is 6000 Å. The angular resolution of t...

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  19. Match the terms in column I with those in column II

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  20. Which of the following is wrong for interference fringes?

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