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CBSE - XII Science - Physics - Wave Optics
Please answer below question from 2023 board paper:
Asked by prachis14
6th March 2023,
4:49 PM
CBSE - XII Science - Physics - Wave Optics
A parallel beam of light of wavelength 600 nm is incident normally on a slit of width 0.2 mm. If the resulting diffraction pattern is observed on a screen 1 m away, find the distance of (i) First minimum, and (ii) Second maximum, from the central maximum.
Asked by suman.sh01
21st May 2022,
11:09 AM
CBSE - XII Science - Physics - Wave Optics
Please refer to the uploaded image for the doubt
Asked by arjunsah797
14th May 2022,
1:34 PM
CBSE - XII Science - Physics - Wave Optics
Two stars distant two light years are just resolved by a telescope. The diameter of the telescope lens is 0.25 m. If the wavelength of light used in 5000A0, then the minimum distance between the stars is
Asked by sirib942254
4th August 2021,
8:30 PM
CBSE - XII Science - Physics - Wave Optics
Physics
Asked by ramdasiyogesh2001
12th March 2021,
12:47 AM
CBSE - XII Science - Physics - Wave Optics
three identical polaroids P1 P2 and P3 are oriented so that passes axis of P2 and P3 are incline at angle of 60° 90° effectively with the passes access a monochromatic source S and police light of intensity I note is kept in front of the proceeds p.m. as shown in figure determine the intensity of light is observed by the observed when polyps P3 is rotated with respect to P2 at angle theta
Asked by dsdeepak487
27th February 2020,
6:06 PM
CBSE - XII Science - Physics - Wave Optics
Two polarizers are placed at crossed position (i.e. having an angle of 90 between them ), a third polarizer making an angle with the first one is placed between them. An unpolarized light of intensity I0 is incident on the first oneand passes through all the three polarizers. Find the light intensity of the emergent beam.
Asked by Abhineet
26th November 2019,
2:04 AM
CBSE - XII Science - Physics - Wave Optics
A parallel beam of light of wavelength 5900 Å falls normally on a plane transmission grating having 4250 lines/cm. Find the angle of diffraction for maximum intensity in first order.
Asked by Abhineet
26th November 2019,
2:03 AM
CBSE - XII Science - Physics - Wave Optics
Explain diffraction of light due to single slit ,derive secondary Maxima and minima?
Asked by vanshrathod71
30th January 2019,
12:38 PM
CBSE - XII Science - Physics - Wave Optics
State two differences between diffraction and interference.
Asked by sunil2791
21st February 2018,
6:11 PM
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
CBSE - XII Science - Physics - Wave Optics
a wave travelling along a streched string is represented by y =3cospi(100t-x) its wavelength is
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
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
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
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
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
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
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
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
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
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
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
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
CBSE - XII Science - Physics - Wave Optics
What is diffraction of light? Draw a graph showing the variation of intensity with angle in a single slit diffraction experiment. Write one feature which distinguishes the observed pattern from the double slit interference pattern. How would the diffraction pattern of a single slit be affected when: (i) the width of the slit is decreased? (ii) the monochromatic source of light is replaced by a source of white light?
Asked by Topperlearning User
13th June 2014,
9:31 AM
CBSE - XII Science - Physics - Wave Optics
Two wavelengths of sodium light 590 nm and 596 nm are used, in turn, to study the diffraction taking place due to a single slit of aperture 1 10-4 m. The distance between the slit and the screen is 1.8 m. Calculate the separation between the positions of the first maxima of the diffraction pattern obtained in the two cases.
Asked by Topperlearning User
13th June 2014,
9:20 AM
CBSE - XII Science - Physics - Wave Optics
a) State the condition under which the phenomenon of diffraction of light takes place.Derive an expression for the width of central maximum due to diffraction of light at a single slit. b) Light of wavelength λ is incident on a slit of width a.The resulting diffraction pattern is observed on a screen at a distance D.For what value of D the linear width of the principle maximum is then equal to the width of the slit.
Asked by Topperlearning User
13th June 2014,
8:36 AM
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
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
CBSE - XII Science - Physics - Wave Optics
Distinguish between inference and diffraction of light.
Asked by Topperlearning User
13th June 2014,
8:04 AM
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
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
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
CBSE - XII Science - Physics - Wave Optics
Why does sky appears blue?
Asked by Topperlearning User
13th June 2014,
7:43 AM
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
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
CBSE - XII Science - Physics - Wave Optics
Various phenomena exhibited by light can be explained using the wave theory of light (a) Name the phenomenon which proves the transverse nature of light. (b) What are the differences between interference and diffraction? (c) A plane wave front is incident on a single slit. Discuss the diffraction pattern formed by the slit. Represent the variation of intensity graphically.
Asked by Topperlearning User
4th June 2014,
1:23 PM
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
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
