Hot questions

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What is the principle of optical fibres?

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

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Why we take the principal focus of a concave mirror as real and a convex mirror as virtual?

asked Oct 17, 2017 in Physics by shamroz (41.5k points)

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1 answer 253 views

Does sound manifest the phenomenon of reflection, diffraction and refraction?

asked Oct 16, 2017 in Physics by sonia (36.5k points)

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Explain image formation with ray diagram, when the object is placed between F and 2F of a convex lens.

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

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What is difference between the power of a convex lens and a concave lens?

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

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What is optical fibres?

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

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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 276 views

The breathing becomes rapid and deep after exercise. Why?

asked Oct 16, 2017 in English by shamroz (41.5k points)

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1 answer 245 views

What happens to the angle of refraction when water waves pass from deep to shallow part of water?

asked Oct 16, 2017 in Physics by sonia (36.5k points)

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1 answer 159 views

Define lens equation or formula. Also write its equation.

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

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1 answer 188 views

Explain image formation with ray diagram when the object is placed beyond 2F from a convex lens?

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

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1 answer 268 views

What is the stimulus of breathing?

asked Oct 16, 2017 in English by shamroz (41.5k points)

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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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State the conditions for total internal reflection.

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

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Write the construction and working of a camera.

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

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1 answer 267 views

The result you have noted is only because of the carbon dioxide

asked Oct 16, 2017 in English by sonia (36.5k points)

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1 answer 233 views

What types of waves do not require any material medium for their propagation?

asked Oct 16, 2017 in Physics by shamroz (41.5k points)

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Explain that noise is a nuisance.

asked Oct 17, 2017 in Physics by shamroz (41.5k points)

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Give the balanced equation for the hydrolysis of sucrose.

asked Sep 21, 2017 in Chemistry by shamroz (41.5k points)

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How can noise pollution be reduced?

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