Engineering Physics II Mock Test 6

10%

Question 1 of 10

1. Which method is used for identifying the crystal structure of Nano-crystalline powders?

Cannot be identified

Electron crystallography

X-ray crystallography

Gamma-ray crystallography

Question 1 of 10

Question 2 of 10

2. The dipole is most stable when the angle between the dipole and the field is __________

0°

45°

90°

180°

Question 2 of 10

Question 3 of 10

3. The amplitude of the electric field in a parallel beam of light of intensity 3 W/m² is __________

23.4 N/C

51.45 N/C

47.53 N/C

34.5 N/C

Question 3 of 10

Question 4 of 10

4. When mobility increases, insulation resistance decreases and dielectric becomes conducting.

True

False

Question 4 of 10

Question 5 of 10

5. Which of the following polarisations is very rapid?

Electronic polarisation

Ionic polarisation

Orientation polarisation

Space charge polarisation

Question 5 of 10

Question 6 of 10

6. The direction of Poynting vector is perpendicular to the direction of propagation of wave.

True

False

Question 6 of 10

Question 7 of 10

7. The synchrotron radiation emitted is Polarized.

True

False

Question 7 of 10

Question 8 of 10

8. The food industry uses X-ray for __________

Sterilizing food

Checking Purity of food

Break it into smaller pieces

Does not uses

Question 8 of 10

Question 9 of 10

9. A point charge of 10 X 10^-6 C is at the centre of a cubical Gaussian surface of sides 0.5 m. What is the flux for the surface?

2.45 X 10⁵ Nm²/C

3.45 X 10⁵ Nm²/C

1.12 X 10⁵ Nm²/C

3.12 X 10⁵ Nm²/C

Question 9 of 10

Question 10 of 10

10. Which of the following disease can be detected by X-Ray?

Pneumonia

Fever

Diarrhea

Bladder infection

Question 10 of 10