1

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)

+2

-0.5

A wind-powered generator converts wind energy into electrical energy. Assume that the generator converts a fixed fraction of the wind energy intercepted by its blades into electrical energy. For wind speed v, the electrical power output will be proportional to

2

IIT-JEE 1999 Screening

MCQ (Single Correct Answer)

+2

-0.5

A spring of force-constant k is cut into two pieces such that one piece is double the length of the other. Then the long piece will have a force-constant of

3

IIT-JEE 1994

MCQ (Single Correct Answer)

+1

-0.25

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration $${a_c}$$ is varying with time t as $${a_c}$$ = k

^{2}rt^{2}where k is a constant. The power delivered to the perticles by the force acting on it is:4

IIT-JEE 1980

MCQ (Single Correct Answer)

+2

-0.5

Two masses of 1gm and 4 gm are moving with equal kinetic energies. The ratio of the magnitude of their linear momentum is

Questions Asked from Work Power & Energy (MCQ (Single Correct Answer))

Number in Brackets after Paper Indicates No. of Questions

JEE Advanced 2018 Paper 2 Offline (1)
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IIT-JEE 2004 Screening (1)
IIT-JEE 2003 Screening (1)
IIT-JEE 2002 Screening (1)
IIT-JEE 2000 Screening (1)
IIT-JEE 1999 Screening (1)
IIT-JEE 1994 (1)
IIT-JEE 1980 (2)

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