In Young's double-slit experiment if the separation of the screen is increases from slits, the fringe width will 

1.  Decrease

2.  Increase

3.  Remain the same

4.  Any of the above depending on the wavelength of the light used

Subtopic:  Young's Double Slit Experiment |
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Five identical polaroids are placed coaxially with \(45^{\circ}\) angular separation between pass axes of adjacent polaroids as shown in the figure. (I0: Intensity of unpolarized light)
          
The intensity of light, I, emerging out of the 5th polaroid is:

1.  I04

2.  I08

3.  I016

4.  I032

Subtopic:  Polarization of Light |
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In Young's double-slit experiment, how many minimas can be obtained on a screen, if the wavelength of light used is 2000 Ao and slit width is 0.0008 mm?

1.  6

2.  7

3.  8

4.  9

Subtopic:  Young's Double Slit Experiment |
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When YDSE is carrying out in liquid, 5th bright fringe lies at a point on the screen where 3rd dark fringe was lying in the air. The refractive index of the medium is

1.  1.5

2.  3

3.  2

4.  1.2

Subtopic:  Young's Double Slit Experiment |
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In Y.D.S.E., the ratio of maximum intensity at a point to the intensity at the same point when one slit is closed, is:

1. 2

2. 3

3. 4

4. 1

Subtopic:  Young's Double Slit Experiment |
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Two light waves given below superimpose at a point.

y1=asin2πt
y2=2asin2πt+π3.

The resultant amplitude of the waves is

1.  a6

2.  a5

3.  a3

4.  a7

Subtopic:  Superposition Principle |
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When a transparent sheet of thickness t and refractive index μ is introduced in one of the paths in YDSE having slit width d and distance between slits and screen is D, then the fringe pattern shifts by

1.  dDμ-1t

2.  dDμ-1t

3.  Ddμ-1t

4.  dtμ-1D

Subtopic:  Young's Double Slit Experiment |
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Which statement is not true for the polarization of light?

1. Light vibrations are restrained only in one plane.
2. Establishes the longitudinal nature of light.
3. The intensity of light decreases.
4. Both (2) & (3)

Subtopic:  Polarization of Light |
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The intensity of the polarized light becomes 1a times its initial intensity. The angle between the axis of analyzer and polarizer is

1.  θ = tan-1a-1

2.  θ = tan-11a

3.  θ = sin-1a-1

4.  θ = sin-11a

Subtopic:  Polarization of Light |
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Which statement is true for interference?

1. Two independent sources of light can produce interference pattern.
2. There is no violation of conservation of energy.
3. White light cannot produce interference.
4. The interference pattern can be obtained even if coherent sources are widely apart.

Subtopic:  Superposition Principle |
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