Question
Who defined the law of
gravitation?ÂSolution
Sir Isaac Newton brought out his monograph, titled `Philosoplliae Naturalis Principia Mathematica,' in 1687. In this work, Newton described universal gravitation and the three laws of motion, which dominated the scientific view of the physical universe for the next three centuries. Newton showed that the motions of objects on Earth and of celestial bodies are governed by the same set of natural laws,bydemonstratingtheconsistencybetween Kepler'slawsofplanetalymotionandhistheory of gravitation, thus removing the last doubts about helio-centrism and advancing the Scientific Revolution.
A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?
Consider the following statements:
1. A flute of smaller length produces waves of lower
2. Sound travels in rocks in the form of longitudi...
The Atom Bomb dropped in Nagasaki is an uncontrolled nuclear fission made up of:
Quantum Theory was discovered by?
Which of the following instruments is correctly matched with its function?
I) Voltmeter - Measures potential differenceÂ
II) Ammeter - Me...
How is the slope of the production possibility curve (PPC) described?
A ship will submerge when it displaces water equal to its
Which of the following physical quantities is scalar quantity ?  Â
Which material has the lowest refractive index?
Which of the following represents Pressure?
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