Sunday, April 21, 2013

The four underlying equations in electromagnetic theory are called:


Q-1; The four underlying equations in electromagnetic theory are called:
1) Einstein's Equations
2) Maxwell's Equations
3) Newton's Equations
4) Faraday's Law
ANSWER: 2 -- MAXWELL'S EQUATIONS
Q-2;  The splitting of an atomic nucleus is called:
1) fission
2) fusion
3) cleavage
4) separation
ANSWER: 1 -- FISSION
Q-3;  In an electromagnetic wave, what is the relative orientation of the magnetic and electric fields?
1) 180 degrees
2) 90 degrees
3) 45 degrees
4) 22.5 degrees
ANSWER: 2 -- 90 DEGREES
Q-4;  In an electromagnetic wave, the E and B fields are both perpendicular to what?
ANSWER: THE DIRECTION OF THE WAVE or DIRECTION OF WAVE ROPAG
Q-5; : When light is reflected from a surface, the angle of incidence is:
1) 30 degrees
2) equal to the angle of reflection
3) 90 degrees
4) 180 degrees
ANSWER: 2 -- EQUAL TO THE ANGLE OF REFLECTION
Q-6;  According to standard convention, the angles of incidence and reflection for a plane surface are measured from:
1) the reflecting surface
2) lines at 45 degrees to the reflecting surface
3) a line at 90 degrees to the reflecting surface
4) there is no standard
ANSWER: 3 -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE
Q-7; A real image always appears:
1) larger than object
2) inverted
3) erect
4) same size as object
ANSWER: 2 -- INVERTED
Q-8;  When light enters an optically denser medium, the light ray:
1) bends away from a normal to surface
2) passes through unbent
3) bends towards a normal to surface
4) none of the above
ANSWER: 3 -- BENDS TOWARDS A NORMAL TO SURFACE
Q-9;  The speed of light in vacuum "C" divided by the Index of Refraction "N" gives the:
1) frequency of the light
2) speed of the light in the medium
3) energy of the light
4) wavelength of the light
ANSWER: 2 -- SPEED OF THE LIGHT IN THE MEDIUM

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