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Metallic bodies consist of large number of free electron or charge that is equal in magnitude but different in nature. But whenever a charge body (say positive) comes close to this body, then metallic negative ions attract to the charge body and the metallic body acquires negative charge. Remember the attracted charges are transferred to earth by earthing

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Wavelenght and intensity of light emitted by a led depends upon

Posted by Gêêtâñjãlï Kärkï 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Shan Pasha 5 years, 7 months ago

Intensity of light depends upon photo current produced in it and wavelength depends on barrier potential

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A uniform wire is cut into 3 parts with ratio of length 2:3:6.The enda of each these parts are connectec across an ideal battery of 10V. If a current of 5A is drawn from the battery. Find the resistance of the wire.

Posted by Payal Lakhani 5 years, 7 months ago

CBSE > Class 12 > Physics

1 answers

Muskaan Vig 5 years, 7 months ago

22...? What was ur answer?

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Aj ka physics k paper kaisa gya

Posted by Vanya Singh 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Vanya Singh 5 years, 7 months ago

Mera set 2 tha

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Gopal Mishra 5 years, 7 months ago

Mera to set c tha

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Rea Rea 5 years, 7 months ago

I got set 1 and atom nuclei ke question bahut gnde the.... Whike set 3 ke easy the kafi

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Resultant intensity of two waves is given by ?

Posted by Parnika Yadav 5 years, 7 months ago

CBSE > Class 12 > Physics

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Shan Pasha 5 years, 7 months ago

I= I1 + I2 + 2√I1I2 * Cos• , Where • represents phase difference

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Hemant Yadav 5 years, 7 months ago

I = I + I + 2√II cos

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What is mirrage

Posted by Prabhsharan Kahlon 5 years, 7 months ago

CBSE > Class 12 > Physics

3 answers

Shan Pasha 5 years, 7 months ago

It is Elution of light

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Hemant Yadav 5 years, 7 months ago

TIR

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Yogita Ingle 5 years, 7 months ago

The mirage is caused by the total internal reflection of light at layers of air of different densities.In a desert, the sand is very hot during day time and a result the layer of air in contact with it gets heated up and becomes lighter. The lighter air rises up and the denser air from above comes down.
As a result, the successive upper layers are denser than those below them. A ray of light coming from a distant object, like the top a tree, gets refracted from a denser to a rarer medium. Consequently the refracted ray bends away from the normal until at a particular layer, the light is incident at an angle greater than the critical angle. At this stage the incident ray suffers total internal reflection and is reflected upwards. When this reflected beam of light enters the eyes of the observer, it appears as if an inverted image of the tree is seen and the sand looks like a pool of water.

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how was paper???

Posted by Shefu ??????? 5 years, 7 months ago

CBSE > Class 12 > Physics