General Knowledge Quiz Physics

Q. Which instrument used for finding out wind-direction?
A. wind vane
Q. What is the product of the time period of a wave and its frequency?
A. Unity
Q. Which type of sound is produced by a bat?
A. Ultrasonic
Q. In our houses we get 220 V A.C What does the value 220 represent?
A. Effective voltage
Q. Which is the correct device for the detection of thermal radiation?
A. Expand more than liquids
Q. Activated charcoal is employed to remove colouring matter from pure substance,
it work?
A. Adsorption

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