Explore topic-wise MCQs in Engineering Physics Questions and Answers.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

An atom A, moving relative to the observer, with velocity 2 X 108m/s emits a particle B which moves with a velocity of 2.8 X 108m/s with respect to the atom. The velocity of the emitter particle relative to the scientist is _____________

A. 0.8 X 108m/s
B. 2.4 X 108m/s
C. 3 x 108m/s
D. 2.95 X 108m/s
Answer» E.
Discussion
2.

From the graph, what should be the velocity as observed from frame S?

A. 0.6 c
B. 0.7 c
C. 0.8 c
D. 0.9 c
Answer» D. 0.9 c
Discussion
3.

For u’ < c and v < c the equation becomes ____________

A. u = \(\frac{u^{‘}+v}{\frac{u^{‘}v}{c^2}}\)
B. u = \(\frac{u^{‘}+v}{1+u^{‘}v}\)
C. u = 1+\(\frac{u^{‘}v}{c^2} \)
D. u = u’ + v
Answer» E.
Discussion
4.

When a particle is moving with a velocity of light c relative to S, its velocity as observed by an observer in the frame S’ is _____________

A. Zero
B. 0.5 c
C. 0.75 c
D. c
Answer» E.
Discussion
5.

In the case v << c, Lorentz transformation is the same as ____________

A. Einstein’s transformation
B. Galilean transformation
C. Maxwell’s transformation
D. Planck’s transformation
Answer» C. Maxwell’s transformation
Discussion