कार्य, ऊर्जा और शक्ति Class 11 VVI Numericals | Work, Energy and Power Numericals in Hindi | Lec-7

Numericals on Combination OF Resistance || Power || Energy

Solved Numerical Class illustration on Work || Graphical Questions (imp)

Class 11 NEET 2020 - Revision In 30 Days | Work Power Energy - Quick Revision | NEET Physics | Important Questions

These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion At any instant the magnitude of rate of change of potential energy of the projectile of mass 1 kg is numerically equal to magnitude of a.v (where a is acceleration due to gravity and v is velocity at that instant) Reason The graph representing power delivered by the gravitational force acting on the projectile with time will be straight line with negative slope.

Numerical problems Calculate Work done by a man of weight of 300 N in, climbing the second floor of a building 7 .0 mhigh

If letters in the word ULTRAVIOLET are arranged in the alphabetical order and each letter is assigned numerical value equal to its serial number as in the English alphabet, what is the difference between the sum of odd-positioned nos. and that of even- positioned nos.? 1) 11 2) 7 3) 15 4) 9 5) None of these