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Diffraction Of Light Free Doubts and Solutions

CBSE - XII Science - Physics - Wave Optics

State two differences between diffraction and interference.

Asked by sunil2791 21st February 2018, 6:11 PM
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CBSE - XII Science - Physics - Wave Optics

two towers on top of hills are 40 km apart . the line joining them passes 50 m above a hill halfway
between the tower .what is the largest wavelength of radio waves ,what is the larges wavelength of radio waves ,which can be sent between the towers without appreciable diffraction effects

Asked by vinodjoshi112233 7th December 2017, 8:40 PM
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CBSE - XII Science - Physics - Wave Optics

a wave travelling along a streched string is represented by y =3cospi(100t-x) its wavelength is
 

Asked by mounikeshthota 14th February 2016, 9:05 PM
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CBSE - XII Science - Physics - Wave Optics

What is the ratio of intensity of bright spot to that of a dark spot in an interference pattern, if the ratio of intensities of the two interfering waves is 3:5 ? 

Asked by nayonikamenon15 11th January 2016, 12:37 AM
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CBSE - XII Science - Physics - Wave Optics

what do you mean by diffraction of light and state the condition for the diffraction?obtain the condition for secondary maxima and minima.also draw the intensity distribution curve?

Asked by mahamood.iphone 14th December 2015, 9:39 PM
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CBSE - XII Science - Physics - Wave Optics

Explain using Huygen's principle , how diffraction is produced by a narrow slit which is illuminated by a monocromatic light. Show that central maximum is twice as wide as the other maxima and pattern becomes narrower as the width of the slit is increased.

Asked by vinitapahel123 1st December 2015, 3:50 PM
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CBSE - XII Science - Physics - Wave Optics

why is rainbow an arc like,is it spherical or hemisphere ,how it is predoced and why does red colour forms outer part where voilet color forms inner part ? please provide diagramic representation.

Asked by Malik Tariq Ul Islam 5th June 2015, 5:55 PM
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CBSE - XII Science - Physics - Wave Optics

Two towers on top of two hills are 40 km apart.The line joining them passes 50 m above a hill halfway between towers. What is the longest wavelength of radiowaves which can be sent between the towers without appreciable diffraction ?

Asked by Kb Aulakh 27th April 2015, 11:10 PM
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CBSE - XII Science - Physics - Wave Optics

In single slit diffraction experiment ,if slit width is made double of original then intensity increases
1.) two times
2.)four times
3.) 8 times
4.) 16 times
Which is correct and how ? Please explain in detail.

Asked by Kb Aulakh 25th April 2015, 5:55 PM
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CBSE - XII Science - Physics - Wave Optics

why is ray optics considered to be the limit for wave optics?

Asked by Malavika Umesh 6th March 2015, 8:16 PM
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CBSE - XII Science - Physics - Wave Optics

in a single slit diffraction experiment how would the intensity of the central maxima change  if:-
i)slit width is halved
ii)visible light of longer wavelength is used

Asked by Malavika Umesh 6th March 2015, 8:01 PM
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CBSE - XII Science - Physics - Wave Optics

explain in detail why the secondary maxima becomes weaker with the increasing order(n) of the secondary maxima?

Asked by Malavika Umesh 6th March 2015, 7:53 PM
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CBSE - XII Science - Physics - Wave Optics

Show with the helpof a diagram how Hugens prinicple is used to obtain the diffraction pattern by a single slit.

Asked by Malavika Umesh 24th February 2015, 7:33 PM
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CBSE - XII Science - Physics - Wave Optics

A slit is illuminated by a light of wavelength 6000 Å .How much will be the slit width for which the (i) first maximum will  fall at an angle of diffraction of 300 ?(ii)first minimum will  fall at an angle of diffraction of 300 ?

Asked by Topperlearning User 13th June 2014, 8:19 AM
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CBSE - XII Science - Physics - Wave Optics

When a tiny circular obstacle is placed in the path of the light of a distant source, a bright spot is seen at the center of the shadow of the obstacle. Explain why?

Asked by Topperlearning User 13th June 2014, 8:14 AM
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CBSE - XII Science - Physics - Wave Optics

Distinguish between inference and diffraction of light.

Asked by Topperlearning User 13th June 2014, 8:04 AM
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CBSE - XII Science - Physics - Wave Optics

A slit is illuminated by light of wavelength .Find the angular position of the first diffraction minimum as the slit expands from 

Asked by Topperlearning User 13th June 2014, 7:53 AM
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CBSE - XII Science - Physics - Wave Optics

Does the law of conservation of energy holds good for diffraction?

Asked by Topperlearning User 13th June 2014, 7:50 AM
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CBSE - XII Science - Physics - Wave Optics

what is the difference between the points of minimum intensity of interference and diffraction?

Asked by Topperlearning User 13th June 2014, 7:48 AM
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CBSE - XII Science - Physics - Wave Optics

Why does sky appears blue?

Asked by Topperlearning User 13th June 2014, 7:43 AM
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CBSE - XII Science - Physics - Wave Optics

The diffraction due to a single slit is observed in the laboratory. What will be the effect on the diffraction pattern if (a) Light of smaller wavelength is used. (b) Slit is made thinner.

Asked by Topperlearning User 13th June 2014, 7:39 AM
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CBSE - XII Science - Physics - Wave Optics

Why does light appear to travel in a straight line in spite of its wave nature?

Asked by Topperlearning User 13th June 2014, 7:29 AM
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CBSE - XII Science - Physics - Wave Optics

Two students are separated by a 7m partition wall in a room 10m high. If both light and sound waves can bend around obstacles, how is it that the students are unable to see each other even though they can converse easily?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XII Science - Physics - Wave Optics

Light of wavelength 5500 passes through a single slit of width 0.01 m. Find the angular diffraction to the first dark band of the diffraction pattern.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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