Temperature of distant luminous bodies can be determined by
Which term is not associated with sound waves?
Which of the following device is best suited for measuring the temperature inside metallurgical furnaces?
An anemometer measures which of the following?
The unit of electrical power is
The reverse effect of X-ray emission is
The dynamo converts
If the force applied on the object is in the direction opposite to the direction of motion, the speed of the object __________.
Atomic explosion is triggered by
Which one among the following components is used as an amplifying device?