AIPMT 2015 Cancelled Paper | Work, Energy and Power Question 20 | Physics

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

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

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A particle with total energy E is moving in a potential energy region U(x). Motion of the particle is restricted to the region when

U(x) < E

U(x) = 0

U(x) $$ \le $$ E

U(x) > E

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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