Mix — Physics MCQs (FSc / Matric)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#17 Which one of the following vector makes an angle less than 45 degrees with y-axis is ___.
A) A = i + 3j
B) B = 2i + 1j
C) C = 2i + 2j
D) None
#18 A body moves due east with velocity 20km/hr and then due north with velocity 15km/hr the resultant velocity is ___.
A) 15km/hr
B) 5km/hr
C) 20km/hr
D) 25km/hr
#19 Angle of the vector A = i - j with x-axis ___.
A) 45 degrees
B) 30 degrees
C) 225 degrees
D) 315 degrees
#20 Rain is vertically downward with velocity of 30m/s, a wind blows from north to south direction with 10m/s then at what angle should the umbrella be held and in which direction.
A) Tan(inverse) 1/3 vertical towards north
B) Tan(inverse) 1/3 vertical towards south
C) Cos(inverse) 1/3 vertical towards north
D) Cos(inverse) 1/3 vertical towards south
#21 If y-component of a force acting in y-direction is 6N the x-component will be
A) 6N
B) 12N
C) Zero
D) None of these
#22 If the scalar product of two non-zero vectors A & B is zero, the magnitude of their vector product will be.
A) AB
B) Zero
C) AB sin theta
D) AB cos theta
#23 The magnitude of resultant of two vectors is 2F. The magnitude of each force is F, the angle between these forces is
A) 0 degrees
B) 90 degrees
C) 120 degrees
D) 180 degrees
#24 If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has direction along.
A) West
B) North
C) Down
D) Up
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