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Posted by Kishan Raiyani 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Lateral shift can be defined as the perpendicular distance of the incident ray and the emergent rays. Normal shift may be described as the apparent shifting of the position of object during refraction of light. In both the shifts, the refractive index is the main factor of dependence.
lateral shift=t sin ( i-r)/cos r.
Posted by Kajalmarabi Marabi 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
Limitations of Coulomb's Law: Its only applicable for point charges at rest. Its only applicable in dose cases where inverse square law is obeyed. Hence, we cannot determine the value of distance 'd' between the charges when they are in arbitrary shape.
Posted by Serah Sahu 5 years, 5 months ago
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Meghna Thapar 5 years, 5 months ago
- Conductors conduct electrical current very easily because of their free electrons.
- Insulators oppose electrical current and make poor conductors.
- Some common conductors are copper, aluminum, gold, and silver.
- Some common insulators are glass, air, plastic, rubber, and wood.
The glass is an insulator, so when electrons are exchanged between it and the cloth you are rubbing it with, the charges stay put on the glass. But with an iron rod, the charges distribute around the rod. Since you are touching it, the charges also distribute around you. So this drains off the charge.
Posted by Aryan Sharma 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
Gauss’s Law
According to Gauss’s law, the total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The total electric flux through a closed surface is zero if no charge is enclosed by the surface.
- Gauss’s law is true for any closed surface, no matter what its shape or size.
- The term q on the right side of Gauss’s lawincludes the sum of all charges enclosed by the surface. The charges may be located anywhere inside the surface.
- The surface that we choose for the application of Gauss’s law is called the Gaussian surface. The Gaussian surface can pass through a continuous charge distribution.
- Gauss’s law is useful for the calculation of the electrostatic field for a symmetric system.
- Gauss’s law is based on the inverse square dependence on distance contained in the Coulomb’s law. Any violation of Gauss’s law will indicate departure from the inverse square law.
Posted by Purnima Rana 5 years, 5 months ago
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Yogita Ingle 5 years, 5 months ago
- X-Rays are produced by bombarding a metal target by high energy electrons.
- It is very important diagnostic tool.
- X-Rays have lesser wavelengths as compared to all other waves.
- Because of this X-Rays can easily penetrate inside the skin (low density material). It either gets reflected or absorbed by the high density material (like bone).
- In any X-Ray, bones look darker and lighter area is skin.
- It is also used for cancer treatment.
- In cancer there is unwanted growth of the cells.
- In order to treat cancer the abnormal growth of cells should be stopped.
- The X-Rays have the ability to damage the living tissue.
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Arvind Yadav 5 years, 5 months ago
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Posted by H J 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
Applications of Total Internal Reflection
- Optical Fibres:-
- They are used in telecommunication industries.
- Optical fibres work on the phenomenon of total internal reflection.
- Characteristics of Optical Fibres:-
- They are small in size and light in weight.
- They have greater information carrying capacities than metallic wires.
Posted by Diksha Y 5 years, 6 months ago
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Arvind Yadav 5 years, 5 months ago
Meghna Thapar 5 years, 6 months ago
An electron and proton are kept in the same electric field . They experience same force and have same acceleration because electrons and protons have the same charge , i.e. 1.602 * 10⁻¹⁹ C. However, electrons have negative charge whereas proton has positive charge. So they would both experience the same force and acceleration but in opposite directions.
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