NEET 2022 Phase 2 | Work, Energy and Power Question 8 | Physics

An electric lift with a maximum load of 2000 kg (lift + passengers) is moving up with a constant speed of 1.5 ms^$$-$$1. The frictional force opposing the motion is 3000 N. The minimum power delivered by the motor to the lift in watts is : (g = 10 ms^$$-$$2)

23000

20000

34500

23500

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

The energy that will be ideally radiated by a 100 kW transmitter in 1 hour is

36 $$\times$$ 10⁷ J

36 $$\times$$ 10⁴ J

36 $$\times$$ 10⁵ J

1 $$\times$$ 10⁵ J

NEET 2021

MCQ (Single Correct Answer)

-1

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 -

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

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

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

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

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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