A. Newton
B. Einstein
C. Michelson
D. Galileo
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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 - A point source of light placed in a homogeneous medium gives rise to ___________________?
A. a cylindrical wave front
B. an elliptical wave front
C. a spherical wave front
D. a plane wave front - When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?
A. 5000 nm
B. 5000A
C. 500m
D. 2000um - Which experiment shows that wavelength of light is smaller than that of sound___________________?
A. Diffraction
B. Polarization
C. Interference
D. Reflection - Radiation with wavelength longer than red lights______________?
A. ultraviolet rays
B. X-rays
C. infra red radiation
D. visible radiation - A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?
A. λ
B. Speed of sound
C. Speed of lightB.
D. h - 2nd law of motion gives the definition of________________?
A. force
B. acceleration
C. velocity
D. both force and acceleration - 1st law of motion gives the definition of _________________________?
A. inertia
B. motion
C. velocity
D. force - In monochromatic red light a blue book will probably appear to be_________________?
A. black
B. purple
C. green
D. no scientific reasoning available - Light on passing through a Polaroid is ___________________?
A. plane polarized
B. un-polarized
C. circularly polarized
D. elliptically polarized
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