Engineering Physics I Mock Test 8

10%

Question 1 of 10

1. The result of the Michaelson Morley experiment was as expected.

True

False

Question 1 of 10

Question 2 of 10

2. Pressure variation of a mechanical wave depends upon ___________

∝Intensity

∝1/Intensity

Intensity²

Independent of intensity

Question 2 of 10

Question 3 of 10

3. When a thin plate of refractive index 1.5 is placed in the path of one of interfering beams of Michaelson Interferometer, a shift of 30 fringes is observed. If the thickness of plate is 0.018 mm, the wavelength of the used light is ____

6000 Å

7000 Å

5000 Å

4000 Å

Question 3 of 10

Question 4 of 10

4. The basic theorem/principle used to obtain mass-energy relation is _____________

Heisenberg’s Uncertainty Principle

Momentum Conservation Theorem

Work-Energy Theorem

Maxwell Theorem

Question 4 of 10

Question 5 of 10

5. The unit of absorptive power is _______________

No unit

Ts^-1

Question 5 of 10

Question 6 of 10

6. Which phenomenon is shown in the figure?

Pair Production

Photoelectric Effect

Pair annihilation

Compton effect

Question 6 of 10

Question 7 of 10

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

0.99 c

0.9 c

0.94 c

Question 7 of 10

Question 8 of 10

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

0.85 c

0.912 c

0.975 c

0.95 c

Question 8 of 10

Question 9 of 10

9. A 20-year-old person goes at a high speed in a rocket on his birthday. when he comes back to earth after 1 earth year, he would be ___________

1 year older

Same age

2 years older

A few months older

Question 9 of 10

Question 10 of 10

10. The rest mass of a photon is equal to ___________

Inertial mass

Zero

Relativistic mass

Gravitational mass

Question 10 of 10