AIPMT 2015 Cancelled Paper | Work, Energy and Power Question 24 | Physics

Two similar springs P and Q have spring constants K_P and K_Q, such that K_P > K_Q. They are stretched first by the same amount (case a), then by the same force (case b). The work done by the springs W_P and W_Q are related as, in case (a) and case (b) respectively

W_P > W_Q; W_Q > W_P

W_P < W_Q; W_Q < W_P

W_P = W_Q; W_P > W_Q

W_P = W_Q; W_P = W_Q

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A particle of mass m is driven by a machine that delivers a constant power k watts. If the particle starts from rest the force on the particle at time t is

$$\sqrt {2mk} {\,t^{ - 1/2}}$$

$${1 \over 2}\sqrt {mk} \,{t^{ - 1/2}}$$

$$\sqrt {{{mk} \over 2}} \,{t^{ - 1/2}}$$

$$\sqrt {mk} \,{t^{ - 1/2}}$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A block of mass 10 kg, moving in x direction with a constant speed of 10 m s^$$-$$1, is subjected to a retarding force F = 0.1x J/m during its travel from x = 20 m to 30 m. Its final KE will be

275 J

250 J

475 J

450 J

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

One coolie takes 1 minute to raise a suitcase through a height of 2 m but the second coolie takes 30 s to raise the same suitcase to the same height. The powers of two coolies are in the ratio

1 : 3

2 : 1

3 : 1

1 : 2

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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