What are wave fronts?
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Explain real image?
Advantage of fixed pulley?
When gravity is the only force acting on an object the object is in what?
The light in vehicle become dim when it is starting,why?
Explain the Optical Medium ?
explain principle of potentiometer
What is the Electric motor ?
Explain about Magnetic mines
Why is battery used in a motor car ?
What is a Coal ?
what is specific fuel consumption,total fuel consumption,mean effective pressure,indicated thermal efficiency...
Differentiate static and kinetic friction.