Mix — Physics MCQs (FSc / Matric)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#9 Electric Field due to a point charge decreases with the square of the distance according to?
A) Inverse Law
B) Inverse Square Law
C) Direct Proportion
D) Constant Value
#10 If a particle moves from point P (3,4,5) to point Q (4,5,6) then its displacement is ___ unit.
A) sqrt(2)
B) 1
C) sqrt(3)
D) None
#11 A force of 10N acts on particle along a direction making an angle of 60 degrees with vertical its vertical component is ___.
A) 8.6N
B) 5N
C) 7.07N
D) None
#12 Vector A makes equal angle with X, Y, Z axis then value of its component (in terms of magnitude of A) is ___.
A) A/sqrt(3)
B) A/sqrt(2)
C) A/2
D) sqrt(3)A
#13 If A = 3i + 4j and B = 7i + 24j, the vector having the same magnitude as B and parallel to A is ___.
A) 5i + 20j
B) 15i + 10j
C) 20i + 15j
D) 15i + 20j
#14 If A = B then which one of the following is not correct.
A) A-hat = B-hat
B) |A| = |B|
C) A.B-hat = B.A-hat
D) A + B = A-hat + B-hat
#15 There are two force vectors one 5N and other of 12N. At what angles the two vectors be added to get resultant of 17N, 7N and 13N respectively.
A) 0, 180 and 90 degrees
B) 0, 90 and 180 degrees
C) 0, 90 and 90 degrees
D) 180, 0, 90 degrees
#16 A car travelling due north at 20m/s turns west and travels at the same speed. The change in its velocity be.
A) 40m/s N-W
B) 20sqrt(2) N-W
C) 40m/s S-W
D) 20sqrt(2) S-W
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