NEET 2021 | Work, Energy and Power Question 11 | Physics

A particle is released from height S from the surface of the Earth. At a certain height its kinetic energy is three times its potential energy. The height from the surface of earth and the speed of the particle at that instant are respectively -

$${S \over 4},\sqrt {{{3gS} \over 2}} $$

$${S \over 4},{{3gS} \over 2}$$

$${S \over 4},{{\sqrt {3gS} } \over 2}$$

$${S \over 2},{{\sqrt {3gS} } \over 2}$$

NEET 2021

MCQ (Single Correct Answer)

-1

Water falls from a height of 60m at the rate of 15 kg/s to operate a turbine. The losses due to frictional force are 10% of the input energy. How much power is generated by the turbine? (g = 10 m/s²)

7.0 kW

10.2 kW

8.1 kW

12.3 kW

NEET 2019

MCQ (Single Correct Answer)

-1

A force F = 20 + 10y acts on a particle in y-direction where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is :

5 J

25 J

20 J

30 J

NEET 2018

MCQ (Single Correct Answer)

-1

A body initially at rest and sliding along a frictionless track from a height h (as shown in the figure) just completes a vertical circle of diameter AB = D. The height h is equal to NEET 2018 Physics - Work, Energy and Power Question 13 English

NEET 2018 Physics - Work, Energy and Power Question 13 English

$${3 \over 2}D$$

$${7 \over 5}D$$

$${5 \over 4}D$$

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NEET Subjects

Biology

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution