Physics-Motion and Force (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 19 - 21 of 23

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Question number: 19

» Physics » Motion and Force

MCQ▾

Question

The graph shows positions as a function of time for two trains A and B running on parallel tracks. For times greater than Equation , which of the following statement is true?

Positions as a function of time for two trains A ans B

Positions as a Function of Time for Two Trains a Ans B

Positions as a function of time for two trains A and B running on parallel tracks

Choices

Choice (4) Response

a.

At time Equation , both trains have the same velocity.

b.

A and B trains may have the same velocity at some time earlier than Equation .

c.

Graph indicates that both trains have the same acceleration at a given time.

d.

A and B trains speed up all the time.

Question number: 20

» Physics » Motion and Force

MCQ▾

Question

An electron moving with uniform velocity in x direction enters a region of uniform magnetic field along y direction. Which of the following physical quantity (ies) is (are) non-zero and remain constant?

A graph of moving electron along x axis

A Graph of Moving Electron Along X Axis

Electron is moving in x direction with uniform velocity then enters to uniform magnetic field

I. Velocity of the electron.

II. Magnitude of the momentum of the electron.

III. Force on the electron.

IV. The kinetic energy of electron.

Choices

Choice (4) Response

a.

Only II and IV

b.

All four

c.

Only I and II

d.

Only III and IV

Question number: 21

» Physics » Motion and Force

MCQ▾

Question

Graph of Distance vs. Time

Graph of Distance vs. Time

Showing the graph of Distance vs. Time and slope made by it

This graph shows

Choices

Choice (4) Response

a.

Constant acceleration

b.

Constant velocity

c.

Constant speed

d.

All of the above

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