How do you determine the resolving power of your eye?

We may perform a simple experiment to determine the resolving power of eye. We will make a pattern of black stripes of equal width separated by white stripes as shown in the figure below. All the black stripes should be of equal width, while the width of white stripes should increase from left to right. We have to paste the pattern at the height of our eye. By moving away or closer to the wall, we will find the position where we can see some two black stripes as separate stripes. ALL the black stripes which are left to it would merge into one another and on the right they would be more clearly visible. Note the width of the white stripe d that separates the two regions and measure the distance D of the eye from the wall. Then d D is the resolving power of our eye.

E M B I B E

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 71

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IMPORTANT

Earn 100

If unpolarised light is incident on a crystal at $60^{o}$ so that the reflected light is completely polarized, then refractive index of the crystal should be

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Important Questions on Wave Optics

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12th Uttar Pradesh Board

IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 72

A decimeter length of solution with concentration

500 k g / m^{3}

rotates the plane of polarization by

24^{o}

. Specific rotation of the solution is

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12th Uttar Pradesh Board

IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 73

Write down mathematical form of Malus law?

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12th Uttar Pradesh Board

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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 74

Explain the construction of polaroid.

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12th Uttar Pradesh Board

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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 75

Two polaroids are placed in position so that intensity of emergent light is maximum. If one of the polaroid is rotated by

30 °, 90 °

relative to other than under new position the intensity of emergent light is how much part of maximum intensity?

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IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 76

When sun is at

37 °

with horizon, then reflected light from surface of water is totally polarised. Find out refractive index of water.

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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 77

The polarising directions of two polariser plates are parallel hence the intensity of emergent light is maximum. What is the minimum rotation of one of the plates so that intensity of emergent light remains one fourth of maximum intensity?

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12th Uttar Pradesh Board

IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 78

By reflection how we can get plane polarised light? What is Brewster's law? Prove that if light is incident on plane transparent slab at angle of polarisation, then reflected and refracted rays are perpendicular to each other.

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12th Uttar Pradesh Board

IMPORTANT

Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 10 - Wave Optics>Exercise>Q 79

What do you mean by polarisation of light? How will you distinguish between polarised and non polarised light?