The angular position of cells remains the same for a sample of a crystal. This property is called___________________?

Related Mcqs:

1. hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?

   WA. 180° B. 0° C. 90° D. 45°...

2. The relation between linear and angular acceleration is______________?

   A. a = a x r B. a = r x a C. a = a x r D. r = a x a...

3. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?

   A. 4 rad. S-1 B. 5 rad. S-1 C. 1.6 rad. S-1 D. 2.8 ms-1...

4. The angular speed for daily rotation of the earth in rad S-1 is______________?

   A. 7.3 x 10 radians/second B. 7.3 x 5 radians/second C. 3.7 x 10 7.3 x 5 radians/second D. 7.3 x 10-5 radians/second...

5. In an angular motion, Newton’s second law of motion is_____________?

   A. F=ma B. F=τp/It C. Στ = I α D. All above...

6. The angular speed of seconds hand of a watch in rads-1 is______________?

   A. π B. π/2 C. π/30 D. π/180...

7. The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is________________?

   A. π B. 3π C. 6π D. 12π...

8. If the density of atoms remain same along any direction in a crystal is called__________________?

   A. Symmetry B. Homogeneity C. Isotropy D. Cleavage...

9. X-rays are diffracted by a crystal but not by a diffraction grating because_____________?

   A. The ions in a crystal are well arranged B. The lines in a diffraction grating cannot reflect X-rays. C. The penetration power of X-rays is high in a diffraction grating D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal...

10. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

    A. 2 B. 3 C. 4 D. 5...