Read important Physics MCQS For Exam.These physics General Knowledge Mcqs Contain of World Geography, Atmosphere, Science & Literature, events Mcqs, Current Affairs Mcqs , Pakistan Affairs Mcqs and International Organizations. These general knowledge questions are very important for all type of exams conducted by Fpsc, Nts, Kppsc, Ppsc, Spsc, Bpsc, Ots, Uts, Pts, Cts, Ats, etea and other testing agencies of Pakistan
Note: The bold option is the right answer for the given MCQ’S:
1. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of:
A. 0.20 m3
B. 0.14 m3
C. 9.3 × 10−3 m3
D. 2.3 × 10−3 m3
E. 7.4 × 10−4 m3
2. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 cm has a total surface area
of:
A. 1.7 × 10−3 m2
B. 3.2 × 10−3 m2
C. 2.0 × 10−3 m3
D. 5.3 × 10−3 m2
E. 7.4 × 10−3 m2
3. A cubic box with an edge of exactly 1 cm has a volume of:
A. 10−9 m3
B. 10−6 m3
C. 10−3 m3
D. 103 m3
E. 106 m3
4. A square with an edge of exactly 1 cm has an area of:
A. 10−6 m2
B. 10−4 m2
C. 102 m2
D. 104 m2
E. 106 m2
5. 1 m is equivalent to 3.281 ft. A cube with an edge of 1.5 ft has a volume of:
A. 1.2 × 102 m3
B. 9.6 × 10−2 m3
C. 10.5 m3
D. 9.5 × 10−2 m3
E. 0.21 m3
6. During a short interval of time the speed v in m/s of an automobile is given by v = at2 + bt3,
where the time t is in seconds. The units of a and b are respectively:
A. m · s2; m · s4
B. s3/m; s4/m
C. m/s2; m/s3
D. m/s3; m/s4
E. m/s4; m/s5
7. Suppose A = BC, where A has the dimension L/M and C has the dimension L/T. Then B
has the dimension:
A. T/M
B. L2/TM
C. TM/L2
D. L2T/M
E. M/L2T
8. A particle moves along the x axis from xi to xf . Of the following values of the initial and final
coordinates, which results in the displacement with the largest magnitude?
A. xi = 4 m, xf = 6m
B. xi = −4 m, xf = −8 m
C. xi = −4 m, xf = 2m
D. xi = 4 m, xf = −2 m
E. xi = −4 m, xf = 4m
9. A particle moves along the x axis from xi to xf . Of the following values of the initial and final
coordinates, which results in a negative displacement?
A. xi = 4 m, xf = 6m
B. xi = −4 m, xf = −8 m
C. xi = −4 m, xf = 2m
D. xi = −4 m, xf = −2 m
E. xi = −4 m, xf = 4m
1o. The average speed of a moving object during a given interval of time is always:
A. the magnitude of its average velocity over the interval
B. the distance covered during the time interval divided by the time interval
C. one-half its speed at the end of the interval
D. its acceleration multiplied by the time interval
E. one-half its acceleration multiplied by the time interval.
11. Two automobiles are 150 kilometers apart and traveling toward each other. One automobile
is moving at 60 km/h and the other is moving at 40 km/h mph. In how many hours will they
meet?
A. 2.5
B. 2.0
C. 1.75
D. 1.5
E. 1.25
12. A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at
an average speed of 40 km/h. The average speed of the car for this 80-km trip is:
A. 40 km/h
B. 45 km/h
C. 48 km/h
D. 53 km/h
E. 80 km/h
13. A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around,
and returns to Hither. The time for this round trip is 2 hours. The magnitude of the average
velocity of the car for this round trip is:
A. 0
B. 50 km/hr
C. 100 km/hr
D. 200 km/hr
E. cannot be calculated without knowing the acceleration
13. A car starts from Hither, goes 50 km in a straight line to Yon, immediately turns around, and
returns to Hither. The time for this round trip is 2 hours. The average speed of the car for
this round trip is:
A. 0
B. 50 km/h
C. 100 km/h
D. 200 km/h
E. cannot be calculated without knowing the acceleration
14. The coordinate of a particle in meters is given by x(t) = 16t − 3.0t3, where the time t is in
seconds. The particle is momentarily at rest at t =
A. 0.75 s
B. 1.3 s
C. 5.3 s
D. 7.3 s
E. 9.3 s
15. A drag racing car starts from rest at t = 0 and moves along a straight line with velocity given
by v = bt2, where b is a constant. The expression for the distance traveled by this car from its
position at t = 0 is:
A. bt3
B. bt3/3
C. 4bt2
D. 3bt2
E. bt3/2
ans: B
16. A ball rolls up a slope. At the end of three seconds its velocity is 20 cm/s; at the end of eight
seconds its velocity is 0. What is the average acceleration from the third to the eighth second?
A. 2.5 cm/s
B. 4.0 cm/s
C. 5.0 cm/s
D. 6.0 cm/s
E. 6.67 cm/s
17. The coordinate of an object is given as a function of time by x = 7t − 3t
2, where x is in meters
and t is in seconds. Its average velocity over the interval from t = 0 to t = 4 s is:
A. 5 m/s
B. −5 m/s
C. 11 m/s
D. −11 m/s
E. −14.5 m/s
18. The velocity of an object is given as a function of time by v = 4t − 3t
2, where v is in m/s andt is in seconds. Its average velocity over the interval from t = 0 to t = 2 s:
A. is 0
B. is −2 m/s
C. is 2 m/s
D. is −4 m/s
E. cannot be calculated unless the initial position is given
19. The coordinate of an object is given as a function of time by x = 4t
2 −3t
3, where x is in meters
and t is in seconds. Its average acceleration over the interval from t = 0 to t = 2 s is:
A. −4 m/s
B. 4 m/s
C. −10 m/s
D. 10 m/s
E. −13 m/s
20. Each of four particles move along an x axis. Their coordinates (in meters) as functions of time
(in seconds) are given by
particle 1: x(t)=3.5 − 2.7t
particle 2: x(t)=3.5+2.7t
particle 3: x(t)=3.5+2.7t
particle 4: x(t)=3.5 − 3.4t − 2.7t
Which of these particles have constant acceleration?
A. All four
B. Only 1 and 2
C. Only 2 and 3
D. Only 3 and 4
E. None of them
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