Addition of suitable impurities into semiconductor, is called
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A galvanometer can be converted into a voltmeter by connecting with it a
____________________is a measure of the actual amount of water vapour in a particular sample of air: measured as a partial pressure.
In a qualitative way, the tendency of undisturbed objects to stay at rest or to keep moving with the same velocity is called _________.
Find the resistance (in mega ohm) of a wire of length 8 m, cross sectional area 2 sq.cm and made of a material of resistivity 120 ohm m.
A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.
A force of 200 N displaces a body by 4 m, calculate the work done (in J).
Which one of the following is not a property of electromagnetic waves?
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