Engineering Physics II Mock Test 3

1. In Fresnel diffraction, the relative phase difference between the curved wavefront is ___________

2. The velocity of light in water is 1.5 X 10⁸ m/s. What is the polarizing angle of incidence?

3. A tube of length 20cm containing a 10% sugar solution rotates the plane of polarization by 13.2°. What is the specific rotation of sugar solution?

4. Find the missing order for a double-slit Fraunhofer Diffraction pattern if the slit widths are 0.2 mm separated by 0.6 mm.

5. Do the spectra observed by grating and prism depends on the nature of the material?

6. Identify X and Y.

7. A screen is placed 2m away from the lens to obtain the diffraction pattern in the focal plane of the lens in a single slit diffraction experiment. What will be the slit width if the first minimum lies 5 mm on either side of the central maximum when plane light waves of wavelength 4000 Å are incident on the slit?

8. The surface of calculation for Fraunhofer and Fresnel diffraction patterns are respectively __________

9. Sound waves can be polarized.

10. Sound waves cannot be diffracted.