An unpolarised light beam strikes a glass surface at Brewster's angle. Then:
1. the refracted light will be completely polarised.
2. both the reflected and refracted light will be completely polarised.
3. the reflected light will be completely polarised but the refracted light will be partially polarised.
4. the reflected light will be partially polarised.
Subtopic:  Polarization of Light |
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If an unpolarised light is incident on a plane surface of refractive index \(\sqrt3\) at Brewster's angle then the angle of refractive is:
1. \(0^\circ\)
2. \(30^\circ\)
3. \(60^\circ\)
4. \(90^\circ\)
Subtopic:  Polarization of Light |
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A beam of unpolarized light of intensity \(I_0\) is passed through a polaroid \(A,\) through another polaroid \(B,\) oriented at \(60^\circ\) and finally through another polaroid \(C,\) oriented at \(45^\circ\) relative to \(B\) as shown. The intensity of emergent light is:
           
1. \(\dfrac{{I}_0}{16}\) 2. \(\dfrac{{I}_0}4\)
3. \(\dfrac{{I}_0}2\) 4. \(\dfrac{{I}_0}{32}\)
Subtopic:  Polarization of Light |
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A linearly polarized monochromatic light of intensity \(10\) lumen is incident on a polarizer. The angle between the direction of polarization of the light and that of the polarizer such that the intensity of output light is \(2.5\) lumen is:
1. \(60^\circ\)
2. \(75^\circ\)
3. \(30^\circ\)
4. \(45^\circ\)
Subtopic:  Polarization of Light |
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After passing through a polarizer, a linearly polarized light of intensity \(I\) is incident on an analyser making an angle of \(30^\circ\) with the axes of the polariser. The intensity of light emitted from the analyser will be:
1. \(\dfrac{I}{2}\)
2. \(\dfrac{I}{3}\)
3. \(\dfrac{3I}{4}\)
4. \(\dfrac{2I}{3}\)
Subtopic:  Polarization of Light |
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The Brewster's angle for an interface should be:
1. \(30^{\circ}<i_b<45^{\circ}\)
2. \(45^{\circ}<i_b<90^{\circ}\)
3. \(i_b=90^{\circ}\)
4. \(0^{\circ}<i_b<30^{\circ}\)

Subtopic:  Polarization of Light |
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