A. Newton
B. Michelson
C. Huygen
D. Young
Related Mcqs:
- 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 - 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 - 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 - 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 - 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° - The direction of a vector in space is specified by_______________?
A. One angle
B. Two angle
C. Three angle
D. No angle - The period of a circular motion is given by_______________?
A. T = πv
B. T = πw
C. T = 2πr
D. T = 2πr/v - The relativistic energy E is equivalent to relativistic mass given by_______________?
A. Ec2
B. E/c2
C. E/c
D. c2/E - The equation θ = 1.22 λ/D was devised by_______________?
A. Newton
B. Einstein
C. Raleigh
D. Planks - In He-Ne laser the lasing action is produced by_______________?
A. Ne only
B. He-Ne both
C. Electrons of He
D. Electrons Ne
