Recent questions without a selected answer

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1 answer 91 views

What is meant by the terms nearsightedness and farsightedness. How these defects can be corrected?

asked Oct 18, 2017 in Physics by sonia (36.5k points)

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1 answer 161 views

Draw the ray diagram for image formation in human eye when object is placed at near point

asked Oct 18, 2017 in Physics by sonia (36.5k points)

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1 answer 187 views

What do you mean by near point and far point of the eye?

asked Oct 18, 2017 in Physics by sonia (36.5k points)

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1 answer 103 views

Define the term accommodation. How defects in accommodation be corrected?

asked Oct 18, 2017 in Physics by sonia (36.5k points)

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1 answer 112 views

Describe the mechanism of eye for focusing the image of an object onto the retina.

asked Oct 18, 2017 in Biology by sonia (36.5k points)

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1 answer 567 views

Describe how image is formed in human eye. Draw ray diagrams to show the formation of images in the normal human eye.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 385 views

With the help of a ray diagram, how you can show the use of thin converging lens as a magnifying glass?

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 231 views

Draw the ray diagrams of (i) Simple microscope (ii) Compound microscope Refracting telescope.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 91 views

Mention the magnifying powers of the following optical instruments

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 159 views

What is telescope? Describe the working of a refracting telescope.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 122 views

What is a compound microscope? Describe its some features and uses.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 312 views

What is simple microscope? How is image formed in it?

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 354 views

Define the terms resolving power and magnifying power or angular magnification.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 74 views

Describe the use and working of endoscope.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 149 views

What is a light pipe? Describe its uses.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 120 views

What is the principle of optical fibres?

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 93 views

What is optical fibres?

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 193 views

Describe the use of totally internal reflecting prism.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 141 views

What is photograph enlarger? How does it work?

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 85 views

How does a slide projector or movie projector work? Explain.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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