General Science MCQ Questions with Answers : Physics General Knowledge Questions
Physics General Knowledge Questions and Answers
33) In the first order of levers, what is between the resistance and the effort?
Ans . Fulcrum
34) What is called the ratio of the resistance to the effort when they balance each other?
Ans . Mechanical advantage of a simple machine
35) What is called the perpendicular distance from effort to fulcrum?
Ans . Effort arm
36) Write an example of second order of levers?
Ans . Lime squeezer
37) Write some example of the first order levers?
Ans . Balance, scissors, spanner
38) State the law of conservation of energy.
Ans . Energy can neither be created nor destroyed
39) Who in 1643 was the first person to create vacuum above the liquid?
Ans . Evangelista Torricelli
40) Who in 1786 invented the gold leaf electro scope?
Ans . Abraham Bennet
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