- 1(current)
Q. No.Five identical polaroids are placed coaxially with \(45^{\circ}\) angular separation between pass axes of adjacent polaroids as shown in the figure. (\(I_0\): Intensity of unpolarized light)
The intensity of light, \(I\),
emerging out of the \(5\)th polaroid is:
| 1. | \(\dfrac{I_0}{4}\) | 2. | \(\dfrac{I_0}{8}\) |
| 3. | \(\dfrac{I_0}{16}\) | 4. | \(\dfrac{I_0}{32}\) |
Subtopic: Â Polarization of Light |
 76%
From NCERT
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Which of the following statements indicates that light waves are transverse?
| 1. | Light waves can travel in a vacuum. |
| 2. | Light waves show interference. |
| 3. | Light waves can be polarized. |
| 4. | Light waves can be diffracted. |
Subtopic: Â Polarization of Light |
 76%
From NCERT
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If the polarising angle for a material is \(60^{\circ},\) then the refractive index of the material will be:
| 1. | \(\dfrac{1}{\sqrt{3}}\) | 2. | \(\dfrac{3}{2}\) |
| 3. | \(\sqrt{3}\) | 4. | \(\dfrac{\sqrt{3}}{2}\) |
Subtopic: Â Polarization of Light |
 83%
From NCERT
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A plane-polarized light with intensity \(I_0\) is incident on a polaroid with an electric field vector making an angle of \(60^{\circ}\) with the transmission axis of the polaroid. The intensity of the resulting light will be:
| 1. | \(\dfrac{I_0}{4}\) | 2. | \(I_0\) |
| 3. | \(2I_0\) | 4. | \(\dfrac{I_0}{2}\) |
Subtopic: Â Polarization of Light |
 81%
From NCERT
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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. \(\dfrac{2I}{3}\)
1. \(\dfrac{I}{2}\)
2. \(\dfrac{I}{3}\)
3. \(\dfrac{3I}{4}\)
4. \(\dfrac{2I}{3}\)
Subtopic: Â Polarization of Light |
 83%
From NCERT
NEET - 2022
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Two polaroids \(P_1\) and \(P_2\) are placed with their axis perpendicular to each other. Unpolarised light of intensity \(I_0\) is incident on \(P_1\). A third polaroid \(P_3\) is kept in between \(P_1\) and \(P_2\) such that its axis makes an angle \(45^{\circ}\) with that of \(P_1\). The intensity of transmitted light through \(P_2\) is:
| 1. | \(\dfrac{I_0}{4}\) | 2. | \(\dfrac{I_0}{8}\) |
| 3. | \(\dfrac{I_0}{16}\) | 4. | \(\dfrac{I_0}{2}\) |
Subtopic: Â Polarization of Light |
 78%
From NCERT
NEET - 2017
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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: Â Polarization of Light |
 75%
From NCERT
NEET - 2020
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If the light is polarised by reflection, then the angle between reflected and refracted light is:
| 1. | \(\pi\) | 2. | \(\dfrac{\pi}{2}\) |
| 3. | \(2\pi\) | 4. | \(\dfrac{\pi}{4}\) |
Subtopic: Â Polarization of Light |
 87%
From NCERT
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Two Nicols prisms (polariser and analyser) are oriented in such a way that the maximum amount of light is transmitted. Now, if the analyser is rotated by an angle of \(45^\circ\), what fraction of the maximum intensity of the light will be reduced?
1. \(25\%\)
2. \(75\%\)
3. \(50\%\)
4. \(30\%\)
1. \(25\%\)
2. \(75\%\)
3. \(50\%\)
4. \(30\%\)
Subtopic: Â Polarization of Light |
 61%
From NCERT
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Hints
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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: Â Polarization of Light |
 69%
From NCERT
NEET - 2022
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- 1(current)
Q. No.
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