Work, Energy and Power-Kinetic Energy [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 3 of 43

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Question 1

Question MCQ▾

A slow moving electron collides elastically with a hydrogen atom at rest. The initial and final motions are along the same straight line. What fraction of electron՚s kinetic energy is transferred to the hydrogen atom? The mass of hydrogen atom is 1850 times the mass of electron.

Choices

Choice (4)Response

a.

0.217%

b.

0.0217%

c.

21.7%

d.

2.17%

Edit

Question 2

Question MCQ▾

A body of mass M splits into two parts αM and (1 - a) M by an internal explosion, which generates kinetic energy T After explosion if the two parts move in the same direction as before, their relative speed will be –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 3

Question MCQ▾

Which of the following hold when two particles of masses m1 and m2 undergo elastic collision?

(1) When m, = m2 and m2 is stationary, there is maximum transfer of kinetic energy in head on collision

(2) When mi = va2 and m2 is stationary, there is maximum transfer of momentum in head on collision

(3) When ml m2 and m2 is stationary, after head on collision m2 moves with twice the velocity of m1

(4) When the collision is oblique and m1 = m2 with m2 stationary, after the collision the particle move in opposite directions.

Select the correct answers and mark it according to the following codes

Choices

Choice (4)Response

a.

2 and 4 are correct

b.

1,2 and 3 are correct

c.

1 and 3 are correct

d.

1 and 2 are correct

Edit