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Maya
Subject: Physics
, asked on 24/2/18
A slit S is illuminated by monochromatic source of light to give two coherent sources P1 and P2 .These given bright and dark bands on a screen .At a point R on the screen there is a dark fringe. what relation must exist between the lengths P1R and P2R?
Answer
1
Sandra Saju
Subject: Physics
, asked on 24/2/18
Explain with diagram, how plane polarized light can be produced by scattering of sunlight.
Answer
1
Chaitanya Kapoor
Subject: Physics
, asked on 24/2/18
State huygens postulates
Answer
1
Aditi
Subject: Physics
, asked on 23/2/18
solve nd explain this question stepwise
A Light from an ordinary source (say a sodium lamp) is passed through a polaroid P
1
. The transmitted light is then made to pass through a second polaroid sheet P
2
, which can be rotated so that the angle
(
θ
) between the two polaroid sheets varies from
O
°
t
o
90
°
. Show graphically variation of the intensity of light , transmitted by P
1
and land pr as a P
2
, as a function of the angle
θ
. Take the incident beam intensity as I
0
. Why does the light from a clear blue portion of the sky , show a raise and fall of intensity when viewed through a polaroid which is rotated?
Answer
1
Poonam Tripathi
Subject: Physics
, asked on 23/2/18
Q. (ii) In Young's double slit experiment using monochromatic light of wavelength
λ
, the intensity of light at a point on the screen where path difference is
λ
, is K units. Find out the intensity of light at a point where path difference is
λ
/ 3.
Plz experts only give the answer and no links plz and also specify any formula used experts.
Answer
2
Ketul
Subject: Physics
, asked on 22/2/18
The intensity at the maximum in YDSE is Io distance between two slits is d=2lamda where lamda is the wavelength. What will be the intensity in front of one of the slits on the screen placed at a distance D=10d?
Answer
2
Ketul
Subject: Physics
, asked on 21/2/18
Two sources of light of wavelength 2500A and 3500A are ised in YDSE simultaneously. Which order of the fringes of two wavelength pattern coincides?
Answer
1
Ritesh Ranjan Rath
Subject: Physics
, asked on 21/2/18
Q. State Huygen's principle . Show with the help of suitable diagram, how this principle is used to obtain the diffraction pattern due to single slit.
Answer
1
Ritesh Ranjan Rath
Subject: Physics
, asked on 21/2/18
Solve this:
Q.
Derive the relation between the connecting the polarizing angle of a medium and refractive index.
Answer
1
Chaitanya Kapoor
Subject: Physics
, asked on 20/2/18
Solve this :
25. (b) Two polaroids are placed at right angle to each other and the transmitted intensity is zero. What happens when one more polaroid is placed between these two, bisecting the angle between them. Find the percentage of the intensity of emergent light in comparison to that of the light emerging from the first polaroid.
Answer
1
Shivam Sharma
Subject: Physics
, asked on 19/2/18
Solve this:
Q. Describe briefly how a diffraction pattern is obtained on a screen due to a single narrow slit illuminated by a monochromatic source of light. Hence, obtain the conditions for the angular width of secondary maxima and secondary minima.
Answer
1
Shivam Sharma
Subject: Physics
, asked on 19/2/18
Solve this:
Q.9. Define the term 'linearly polarised light'. When does the intensity of transmitted become maximum, if a polaroid sheet rotated between two crossed polaroids?
Answer
1
Yatharth
Subject: Physics
, asked on 18/2/18
When we pass unpolarised light through a polariser {single} then is the intensity become half of the orignal one by passing with just one polariser
And if its true plz send any proof of it
Answer
1
Ayushi Aggarwal
Subject: Physics
, asked on 18/2/18
Ques 26 both the choices
Q.26. What is meant by diffraction? Draw a graph to show the relative intensity distribution for a single slit diffraction pattern. Obtain an expression for the diffraction of the first minimum and first maximum in the diffraction pattern.
OR
State Huygen's principle. Using the geometrical construction of secondary wavelets, explain the refraction of a plane wavefront incident on a plane surface. Hence verify Snell's law of refraction.
Answer
1
Ayushi Aggarwal
Subject: Physics
, asked on 18/2/18
Ques 16. Draw and explain the graph showing the variation of intensity in the interference pattern in Young's double slit experiment.
Answer
1
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What are you looking for?
A Light from an ordinary source (say a sodium lamp) is passed through a polaroid P1. The transmitted light is then made to pass through a second polaroid sheet P2, which can be rotated so that the angle
() between the two polaroid sheets varies from . Show graphically variation of the intensity of light , transmitted by P1 and land pr as a P2 , as a function of the angle . Take the incident beam intensity as I0 . Why does the light from a clear blue portion of the sky , show a raise and fall of intensity when viewed through a polaroid which is rotated?
Plz experts only give the answer and no links plz and also specify any formula used experts.
Q. Derive the relation between the connecting the polarizing angle of a medium and refractive index.
25. (b) Two polaroids are placed at right angle to each other and the transmitted intensity is zero. What happens when one more polaroid is placed between these two, bisecting the angle between them. Find the percentage of the intensity of emergent light in comparison to that of the light emerging from the first polaroid.
Q. Describe briefly how a diffraction pattern is obtained on a screen due to a single narrow slit illuminated by a monochromatic source of light. Hence, obtain the conditions for the angular width of secondary maxima and secondary minima.
Q.9. Define the term 'linearly polarised light'. When does the intensity of transmitted become maximum, if a polaroid sheet rotated between two crossed polaroids?
And if its true plz send any proof of it
Q.26. What is meant by diffraction? Draw a graph to show the relative intensity distribution for a single slit diffraction pattern. Obtain an expression for the diffraction of the first minimum and first maximum in the diffraction pattern.
OR
State Huygen's principle. Using the geometrical construction of secondary wavelets, explain the refraction of a plane wavefront incident on a plane surface. Hence verify Snell's law of refraction.