Physics MCQs for FSC,PPSC,FPSC,NTS and all competitive exams Set1.
Photo: The picture clearly shows the famous Albert Einstein's Equation and Nucleus structure.
1.
The
branch of physics which deals with velocities approaching that of light is
called
(a)
Relativistic mechanics (b) Hydrodynamics
(b)
Space physics
(d) Geophysics
2.
Which of
the following is a base quantity?
(a)
Mass (b) Length (c) Time (d) All of these
3.
Which of
the following is a derived quantity?
(a)
Velocity (b) Acceleration (c) Force (d) All of these
4.
The
standard chosen for the measurement of a base quantity should be
(a)
Accessible (b) In variable (c) Both
of them (d) None of
them
5.
Plane
angle and solid angle are
(a)
Geometrical
quantities (b)
Physical quantities
(b)
supplementary
quantities (d) All of these
6.
The
possible cause of a systematic error is
(a)
Zero
error of instrument
(b)
Poor
calibration of instrument
(c)
Incorrect
marking of instrument
(d)
All of these
7.
According
to rules, the correct answer of 2.7543+4.10+1.273 is
(a)
8.1273 (Check it) (b) 8.127 (c) 8.13 (d) 8.1
8.
An
accurate measurement is the one which has less
(a)
Fractional
uncertainty
(b)
Percentage
uncertainty
(c)
Error
(d)
All of these
9.
A
dimension stands for the
(a)
Quantitative
nature of a physical property
(b)
Qualitative nature of a physical property
(c)
Both of
them
(d)
None of
them
10.
[L] is
the dimension of
(a)
Length (b) Diameter (c) Light year (d) All of these
11.
It is
convenient to a vector into the
components which are
(a)
Parallel
to each other
(b)
Anti-parallel
to each other
(c)
Perpendicular to each other
(d)
None of
these
12.
The
angle between two rectangular components of a vector is
(a)
π/2 (b) π (c) 3π/2 (d) 2π
13.
A force
F = 2i + J units has its points of application moved from the point A(1,3) to
B(5,6). The work done is
(a)
8i + 3j (b) 0 (c) 11 (d) 4
14.
Which of
the following is not a resultant of dot product?
(a)
Power (b) Work (c) Torque (d) None of these
15.
The two
vectors having magnitudes 3 and 5 respectively having cross product equal to
zero. Their scalar product is
(a)
0 (b) 2 (c) 8 (d) 15
16.
The
cross product of two vectors is zero as well as their dot product. This implies
that
(a)
Vectors
are equal (b) Vectors are unequal (c)
Vectors are perpendicular (d) One of the vectors is
a null vectors
17.
Which of
the following statement is false?
(a)
Cross product
results in a vector quantity.
(b)
Cross product is commutative.
(c)
Both of
the above
(d)
None of
these
18.
Let A
and B be the two vectors. The product of A and B is a vector which__________ to
the plane containing A and B.
(a)
Parallel (b) Opposite (c)
Perpendicular (d)
None of these
19.
The
direction of the resultant of cross
product of vectors is determined by
(a)
Right hand rule (b) Left hand rule (c) Thumb rule (d) All of these
20.
The cross
product of two vectors is maximum in magnitude when the two vectors are
(a)
Parallel
to each other
(b)
Equal to
each other
(c)
Anti-parallel
to each other
(d)
Perpendicular to each other
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