Engineering Physics I Practice Test 8

1. The device used in the Michaelson Morley experiment was ______

2. The momentum of a photon having energy 10^-17J is ____________

3. An ultrasound pulse sent by a source in sea is reflected by a submerged target at a distance 597.50m and reaches the source after 0.83seconds. Find the velocity of sound in sea water.

4. Electromagnetic wave theory of light could not explain Black Body radiations.

5. Which of the following waves can be transmitted through solids, liquids and gases?

6. During Einstein’s Photoelectric Experiment, what changes are observed when the frequency of the incident radiation is increased?

7. In Michaelson interferometer, the position of mirror read 0.6025mm and 0.8970mm for a pair of consecutive bright. Mean wavelength of light is 5393 Å. The difference between the two wavelengths is ___

8. What is the effect of intensity on the stopping potential?

9. What is cold welding?

10. Which of the following is associated with an electron microscope?