Which lens is used for correcting long ?sightedness ?
What is sonar ( sound navigation and ranging )?
Explain the advantage of fixed pulley?
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what is the name of the device that is made by combining two basic types of solid state rectifiers allowing the device to both rectify and amplify a current?
What is curvilinear motion?
When an object moves with constant velocity does its average velocity during any time interval differ from its instantaneous velocity at any instant?
Does weight affect how far you jump?
What cycle most directly describes the working cycle of a heat engine operating as an ideal engine of maximum thermal efficiency?
Why is the apparent altitude of a star increased by reflection in atmosphere ?
What is the difference between Centigrade and Fahrenheit thermometers ?
How can you save the sea from oil and sound polution?
What is Convex lens ?