An image formed by a concave mirror on a screen is called __________?
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An object having a capability to do work is said to possess __________.
The angle between the __________and the incident ray is called the angle of incidence.
A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ .
What is the name of the device used to convert alternating current into direct current ?
What is the unit of the physical quantity, Momentum?
Sound is a form of ____________ which produces a sensation of hearing in our ears.
Nautical miles is a unit of distance used in