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Class 12th Physics

What is the main physical condition for Coulomb's Law to be accurate?

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Syed Aquib Ur Rahman

Contributor-Level 10

The main condition would be that the point charges have to be at rest or be in a stationary position, for Coulomb's Law to work. The thing is, if the charge particles move, we have to consider the impact of magnetic forces then.

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Class 12th Chemistry

The angular frequency of a simple pendulum is w rad/s. Now the length is made one fourth of the original length, the angular frequency becomes

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alok kumar singh

Contributor-Level 10

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Class 12th Chemistry

To measure light intensity we use

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alok kumar singh

Contributor-Level 10

Photodiode in reverse bias mode is used as intensity measuring device.

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Class 12th Chemistry

After one alpha particle emission and one b^– particle emission from a nucleus

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alok kumar singh

Contributor-Level 10

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Class 12th Chemistry

Rainbow is formed due to

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alok kumar singh

Contributor-Level 10

Rainbow is formed due to internal reflection and dispersion.

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Class 12th Chemistry

A defective eye cannot see close objects clearly because their image is formed

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alok kumar singh

Contributor-Level 10

In hypermetropia image formed by eye lens is beyond retina and is focussed to retina by a convex lens.

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Class 12th Chemistry

Kindly consider the following

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alok kumar singh

Contributor-Level 10

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Class 12th Chemistry

A plane electromagnetic wave EZ = 100 cos (6 * 10⁸ t + 4x) V/m, where x is in metre and t is in second. propagates in medium, what is refractive index of the medium?

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alok kumar singh

Contributor-Level 10

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2 months ago

Class 12th Biomolecules

A coil has resistance of 30 ohm and inductive reactance 20 ohm at 50 Hz frequency. If an ac source of 200 V, 100 Hz is connected across the coil, current in coil will be

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