The velocity of light was determined accurately by_______________?

Related Mcqs:

1. In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?

   A. Becomes double
   B. Remains same
   C. Becomes half
   D. First increases then decrease because of the curvilinear graph

2. The velocity of laser light is___________________?

   A. Less than ordinary light
   B. More than ordinary light
   C. Equal to ordinary light
   D. Different for different colours or frequency

3. The velocity of sound in air would become double than its velocity at 0°C at temperature ?

   A. 313°C
   B. 586°C
   C. 819°C
   D. 1172°C

4. The velocity of sound in air would become double than its velocity at 0°C at temperature________________?

   A. 313°C
   B. 586°C
   C. 819°C
   D. 1172°C

5. 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°

6. The direction of a vector in space is specified by_______________?

   A. One angle
   B. Two angle
   C. Three angle
   D. No angle

7. The period of a circular motion is given by_______________?

   A. T = πv
   B. T = πw
   C. T = 2πr
   D. T = 2πr/v

8. The relativistic energy E is equivalent to relativistic mass given by_______________?

   A. Ec2
   B. E/c2
   C. E/c
   D. c2/E

9. The equation θ = 1.22 λ/D was devised by_______________?

   A. Newton
   B. Einstein
   C. Raleigh
   D. Planks

10. In He-Ne laser the lasing action is produced by_______________?

    A. Ne only
    B. He-Ne both
    C. Electrons of He
    D. Electrons Ne