Exams › NEET › Physics

When light passing through rotating nicol is observed, no change in intensity is seen. What inference can be drawn?

1. The incident light is unpolarized.
2. The incident light is circularly polarized.
3. The incident light is unpolarized or circularly polarized.
4. The incident light is unpolarized or circularly polarizedd or combination of both

Correct answer: The incident light is unpolarized or circularly polarized.

Solution

A rotating Nicol acts as an analyzer. Unpolarized light gives constant average intensity for all orientations, and circularly polarized light also produces no change because its electric field has no preferred plane. Therefore, no intensity variation implies the light is either unpolarized or circularly polarized.

Related NEET Physics questions

• Light waves travel in vaccum along the y-axis. Then the wave front is:
• The observed wavelength of light coming from a distant galaxy is found to be increased by \( 0.5 \% \) as compared with that coming from a terrestrial source. The galaxy is.
• In case of refraction of light
• Three simple harmonic motions in the same direction having the same amplitude a and same period are superposed. If each differs in phase from the next by \( 45^{\circ}, \) then : This question has multiple correct options
• A magnifying glass is used to read the newspaper. As it is moved far away from the newspaper
• Assertion: Virtual object can't be seen by human eye. Reason: Virtual object is formed by converging rays.

⚔️ Practice NEET Physics free + battle 1v1 →