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

u = \(\frac{u^{‘}+v}{\frac{u^{‘}v}{c^2}}\)

u = \(\frac{u^{‘}+v}{1+u^{‘}v}\)

u = 1+\(\frac{u^{‘}v}{c^2} \)

Explore topic-wise MCQs in Engineering Physics.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics 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.	Two particles approach each other with a velocity of 0.9 c. What is their relative velocity as observed by A?
A.	0.9 c
B.	0
C.	0.99 c
D.	0.94 c
Answer» D. 0.94 c

Discussion

3.	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

4.	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

5.	In Lorentzian relativity, if two events are simultaneous for one observer, they will be simultaneous for all other observers as well.
A.	True
B.	False
Answer» C.

Discussion

6.	Lorentz transformations are based on the principle of consistency of the velocity of light.
A.	True
B.	False
Answer» B. False

Discussion

7.	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

8.	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

9.	What would be the mass of the body at rest, if it explodes into two objects of mass 2 kg each moving with a speed 0.8c relative to the original body?
A.	4 Kg
B.	5.4 Kg
C.	6.2 Kg
D.	6.7 Kg
Answer» E.

Discussion

10.	Two particles approach each other with a speed 0.8 c with respect to the laboratory. Their relative speed is ___________
A.	0.912 c
B.	0.95 c
C.	0.975 c
D.	0.85 c
Answer» D. 0.85 c

Discussion

Explore topic-wise MCQs in Engineering Physics.

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 _____________

Two particles approach each other with a velocity of 0.9 c. What is their relative velocity as observed by A?

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

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

In Lorentzian relativity, if two events are simultaneous for one observer, they will be simultaneous for all other observers as well.

Lorentz transformations are based on the principle of consistency of the velocity of light.

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 _____________

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

What would be the mass of the body at rest, if it explodes into two objects of mass 2 kg each moving with a speed 0.8c relative to the original body?

Two particles approach each other with a speed 0.8 c with respect to the laboratory. Their relative speed is ___________