## Polarization of Light- MCQ-Basic

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Polarization of Light.You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. Through which character we can distinguish the light waves from sound waves

•  Interference
•  Refraction
•  Polarisation
•  Reflection

Polarisation

Q2. Which of following can not be polarised

•  Ultraviolet rays
•  Infrared rays
•  Ultrasonic waves

Ultrasonic waves

Q3. Plane polarised light is passed through a polaroid. On viewing through the polaroid we find that when the polariod is given one complete rotation about the direction of the light, one of the following is observed

•  The intensity of light gradually decreases to zero and remains at zero
•  The intensity of light gradually increases to a maximum and remains at maximum
•  Bands become broader and farther apart
•  The intensity of light is twice maximum and twice zero

The intensity of light is twice maximum and twice zero

Q4. Out of the following statements which is not correct

•   When unpolarised light passes through a Nicol's prism, the emergent light is elliptically polarised
•  Nicol's prism works on the principle of double refraction and total internal reflection
•  Nicol's prism can be used to produce and analyse polarised light
•  Calcite and Quartz are both doubly refracting crystals

When unpolarised light passes through a Nicol's prism, the emergent light is elliptically polarised

Q5. Polarised glass is used in sun glasses because

•  It reduces the light intensity to half an account of polarisation
•  It is fashionable
•  It has good colour
•  It is cheaper

It reduces the light intensity to half an account of polarisation

Q6. The transverse nature of light is shown by

•  Interference of light
•  Refraction of light
•  Polarisation of light
•  Dispersion of light

Polarisation of light

Q7. A calcite crystal is placed over a dot on a piece of paper and rotated, on seeing through the calcite one will be see

•  One dot
•  Two stationary dots
•  Two rotating dots
•  One dot rotating about the other

One dot rotating about the other

Q8. The polaroid is

•  Celluloid film
•  Big crystal
•  Cluster of small crystals arranged in a regular way
•  Cluster of small crystals arranged in a haphazard way

Cluster of small crystals arranged in a regular way

Q9. Light from the cloudless sky is

•  Fully polarised
•  Partially polarised
•  Unpolarised
•  Can not be said

Can not be said

Q10. Two polarising plates have polarising directions parallel so as to transmit maximum intensity of light. Through what angle must either plate be turned if the intensities of the transmitted beam is to drop by one-third

•  55o18'
•  144o22'
•  Both of these
•  None of these

Both of these

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