X-Ray Emission
V. When this electron hits the target, it loses its kinetic energy due to collision. Sometimes a part of its energy comes out as a photon and rest is given to the colliding particle of the target. If the electron has a left over kinetic energy it may lose it in the next collision. Sometimes the col..
V. When this electron hits the target, it loses its kinetic energy due to collision. Sometimes a part of its energy comes out as a photon and rest is given to the colliding particle of the target. If the electron has a left over kinetic energy it may lose it in the next collision. Sometimes the col..Summary (Contd..)
>At the time of sunrise and sunset, light from Sun has to pass maximum distance through Earth's atmosphere. As l r > l b red color is scattered least and can enter into our eyes. That is why sun looks red at the time of sunrise and sunset. Clouds are seen due to scattering of light from lower parts..
Sign Convention in Applying Kirchhoff's Rules
The emf of a cell is positive when one moves in the direction of increasing potential (i.e., negative pole to positive pole) through the cell and is negative when one moves from positive to negativ..
The emf of a cell is positive when one moves in the direction of increasing potential (i.e., negative pole to positive pole) through the cell and is negative when one moves from positive to negativ..Introduction - Physical world and Measurement
Physics is sometimes called as 'science of measurement'. The acceleration produced by a force for the motion of a body can be known by measuring the magnitude of applied force and mass of the bod..
Introduction - Physical world and Measurement
Physics is sometimes called as 'science of measurement'. The acceleration produced by a force for the motion of a body can be known by measuring the magnitude of applied force and mass of the body. Similarly, the distance of a stone covered, when thrown horizontally, can be meas..
Illustration
Let us take the case of a heavy door. If a force is applied at a point, which is close to the hinges of the door, we may find it quite difficult to open or close the door. However, if the same force is applied at a point, which is at the maximum distance from hinges, we can easi..
Errors due to external causes
These are caused by external conditions (wind, temperature, etc.,). These errors can be prevented by applying suitable correction..
Applications of principle of moment
The principle of moment is applied in simple machines like the lever. A beam balance also works on the principle of moment..
Pressure
When a force is applied on a surface in a direction perpendicular to the surface, the force is called thrus..
Tensile stress
If there is an increase in the length of the body in the direction of force applied, the stress set up, is called tensile stres..
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