If an object moves in a purely rotatory motion, then each constituent particle of the body moves in a circle, the centre of which is located on a line is called _______.
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The focal length of a concave mirror with a radius of curvature of 20.0 cm is :
If a body slides over a surface, the force resisting the motion between them is called ______.
The rate of change of linear momentum of a body is proportional to the ___________ acting on it.
According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ____ of an object.
_________________ through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface.
Cold air is ______.
Unit of impedance is ___________.
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