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Which of the following materials is used for the generation of ultrasonic waves by using magnetostriction effect?
If radius of earth is R then the height ‘h’ at which the value of ‘g’ becomes one-fourth is-
Water flows in a horizontal pipe of non-uniform area of cross-section at a pressure difference of 1.6 cm of mercury. If the velocity of water at the la...
The movement of a train is an example of what type of motion?
The colour of sky appears blue due to –
What is the work done by a centripetal force on an object moving in a circular path at constant speed?
The SI unit of mechanical power is:
Which device is best suited for measuring the temperature inside metallurgical furnaces?
A potentiometer wire of length 1 m has a resistance of 5 Ω. It is connected to a 6 V battery in series with a resistance of 10 Ω. Determine the emf ...
Ultrasonic waves, propagating through a medium, can be detected by:
