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A parallel beam of monochromatic light is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. Show that if the incident beam makes an angle `theta=sin^-1(lamda/(2d))` with the normal to the plane of the slits, there will be a dark fringe at the centre Po of the pattern.

A

1/4 the maximum intensity

B

half the maximum intensity

C

bright

D

dark

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-WAVE OPTICS-LECTURE SHEET EXERCISE-I (LEVEL -II) (ADVANCED )staright Objective Type Questions
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  2. A source emitting light of wavelengths 480 nm and 600 nm is used in a ...

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  3. A parallel beam of monochromatic light is used in a Young's double sli...

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  4. In a YDSE, the central beight fringe can be indentified:

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  5. In Young's double slit experiment, the two slits acts as coherent sour...

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  6. In Young's double-slit experment, the frist maxima is observed at a fi...

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  7. In a double-slit experiment, instead of taking slits of equal width, o...

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  8. In a YDSE , if the silts are of unequal widths,

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  9. In an interference arrangement similar to Young's double-slit experime...

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  10. Let S(1) and S(2) be the two slits in Young's double-slit experiment. ...

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  13. In this problem , which wavelength (s) will have a strong intensity if...

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  15. Plane microwaves from a transmitter are directed normally towards a pl...

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  16. Consider the situation shown in figure. The two slits S1 and S2 placed...

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  17. In a Young's double slit experiment green light is incident on the two...

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  18. A plate of thickness t made of a material of refractive index mu is pl...

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  19. A mica strip and a polysterence strip are fitted on the two slite of ...

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  20. A mica strip and a polysterence strip are fitted on the two slite of ...

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