Mix — Physics MCQs (FSc / Matric)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#25 Two vectors A and B are making angle theta with each other. The scalar projection of vector B on vector A is written as.
A) A.B/A
B) A.B/B
C) A cos theta
D) Both a and b are correct
#26 If A = sqrt(2) B the vector A is ___ to vector B
A) Parallel
B) Perpendicular
C) Anti-Parallel
D) None
#27 Two vectors of magnitude 6 unit and 8 unit making angle of 30 and 120 with the horizontal then |R| = ______
A) 10
B) 14
C) 2
D) None
#28 For the triangle of vectors B (base), A (right side from head of B), C (left side from tail of B to top), which relation holds?
A) A = B + C
B) C + A = B
C) C = A + B
D) None
#29 The magnitude of dot and cross product of two vectors are 6sqrt(3) and 6 respectively the angle between the vectors is ______
A) 60 degrees
B) 30 degrees
C) 45 degrees
D) 90 degrees
#30 The velocity-time graph of a body in free fall (dropped from rest) is:
A) Horizontal line
B) A straight line sloping up, slope=g
C) A curve
D) A line sloping down
#31 A student walks 100m in 20s, stands still for 10s, then walks another 100m in 20s. Average speed for the whole trip is:
A) 5m/s
B) 4m/s
C) 10m/s
D) 2m/s
#32 A stone is dropped from rest. Taking g = 10 m/s^2, its speed after 3s is:
A) 30 m/s
B) 45 m/s
C) 10 m/s
D) 90 m/s
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