Physics MCQ series - 07

61:  The frequency of a wave is 50 Hertz and its wavelength is 25 meters.  What is the velocity of this wave?

ANSWER :    1250 METERS/SECOND

62:  The wave nature of light is demonstrated by which of the following?

w) the photoelectric effect

x) color

y) the speed of light

z) diffraction

ANSWER :    Z -- DIFFRACTION

63:  The collision between a photon and a free electron was first explained by which of the following scientists?

w) Einstein

x) Heisenberg

y) Compton

z) Bohr

ANSWER :    Y -- COMPTON

64:  Besides solid, liquid, and gas, what is the fourth form of matter?

ANSWER :    PLASMA Science Bowl PHYSICS

65:  What is 25,000 miles per hour on earth, and 5,300 miles per hour on the Moon?

ANSWER :    ESCAPE VELOCITY

66:  In Einstein's universe, what is the fourth dimension?

ANSWER :    TIME

67:  The Tesla and the Gauss are units of measure of:

w) conductance

x) magnetic field strength

y) magnetic flux

z) electrical current

ANSWER :    X -- MAGNETIC FIELD STRENGTH

68:  Shockley, Brattain and Bardeen won a Nobel prize for what small invention?

ANSWER :    TRANSISTOR

69:  What mechanical and electronic device has a name derived from a Czechoslovakian word meaning "work; compulsory service"?

ANSWER :    ROBOT

70:  What is the name of the temperature and pressure conditions at which water can be in the solid, liquid and gas phases simultaneously?

ANSWER :    TRIPLE POINT

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