Doors of a dam are 20m below the surface of water in the dam. If one door is opened what will be the speed of the water that flows out of the door ?
The given can be listed as, h= 20m g = 9.8m/s² To find, v = ? Solution -��…
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Define progressive wave and what are the characteristics of progressive waves
A wave in which the disturbance produced in the medium travels in a given direction co…
What will happen, if the magnetic field in moving coil galvanometer is non radial
In a radial magnetic field, the plane of the coil is always parallel to the magnetic l…
Why is a large value of mutual inductance is not always desirable and how can it be minimised ?
Mutual inductance is a common phenomenon associated with transformer.A large value of…
Thermodynamics involved in a pressure cooker
Pressure cooker is a very common device used in cooking food by consuming lesser amoun…
What is a perfect black body ?
A body that absorbs the entire radiation energy incident on it is called as a perfect …
What is Kirchhoff's law?
There are two laws of Kirchhoff which are used while studying the electrical circuit …
What is a Torsional Pendulum?
It is a device consisting of a heavy disk having high moment of inertia mounted at one…
What is the difference between rest & motion?
Let us see each definition one by one Motion Any body is said be in a state of motion…
Define progressive wave and what are the characteristics of progressive waves
A wave in which the disturbance produced in the medium travels in a given …
State the conditions for constructive & destructive interference of light
(1) Constructive interference (brightness): There is constructive interfer…