THE IUG
PHYSA 1301
Quiz of chapter 1
DEPT. OF PHYSICS
TIME:8-min.
1) The SI unit of mass is:
a) gram.
b) pound.
c) kilogram
c) slug.
c) centimeter
c) kilometer.
c) centimeter
c) kilometer.
2) The SI unit of length is:
a) meter.
b) foot.
3) The cgs unit of length is:
a) meter.
b) foot.
4) The cgs unit of mass is:
a) gram.
b) pound.
c) kilogram
c) slug.
5) The Gaussian unit of length is:
a) meter.
b) foot.
c) mile.
c) inch.
6) The position of a particle is given by x = vt , with x in (m) and t in (s). The units of the constant v
is:
a) m.
b) m/s.
c) m/s2.
d) m.s.
7) The position of a particle is given by x = at 2 + b , with x in (m) and t in (s). The units of the
constant a is:
a) m.
b) m/s.
c) m/s2.
d) m.s.
8) The position of a particle is given by x = at + b , with x in (m) and t in (s). The units of the
constant b is:
2
a) m.
b) m/s.
c) m/s2.
d) m.s.
9) The velocty of a particle is given by v = at + b , with v in (m/s) and t in (s). The units of the
constant b is:
a) m
b) m/s
c) m/s2
d) non of these
10) The velocty of a particle is given by v = at + b , with v in (m/s) and t in (s). The units of the
constant b is:
a) m
b) m/s
c) m/s2
d) non of these
1
11) Which of the following quantities is a vector:
a) speed
b) energy
c) displacement
d) distance
12) Which of the following quantities is a scalar:
a) speed
b) acceleration
c) displacement
d) force
13) Which of the following quantities is a scalar:
a) force
b) area
c) displacement
d) volume
14) Which of the following quantities is a vector:
a) speed
b) area
c) distance
d) volume
15) Which of the following statements is correct concerning a vector quantity:
a) it has a magnitude only.
c) it may have a direction.
b) it has a direction only.
d) it has both magnitude and direction.
16) The vector (A) and the vector (–A) have
a) the same magnitude but different direction
c) the same magnitude but opposite direction
b) the same magnitude and the same direction
d) different magnitude and opposite direction
17) The vector (–A) is:
a) greater than A in magnitude.
c) is in the same direction of A.
b) leass than A in magnitude.
d) is in the direction opposite to A.
18) Two vectors are said to be equal if:
a) they have the same magnitude but opposite direction.
c) they have the same magnitude and the same direction.
b) they have the same direction.
d) they have the same magnitude.
19) The magnitude of the vector A= -i +3j- 2k
a)
14
b)
4
c)
6
d)
12
19) The magnitude of the vector A= 2i +6j- 3k
a) 5.0
b) 5.6
c) 7.0
d) 7.4
2
20) The angle between the vector A= 25i +45j and the positive x-axis is:
a) 29o
b) 61o
c) 209o
d) 151o
21) The angle between the vector A= -25i +45j and the positive x-axis is:
a) 29o
b) 61o
c) 209o
d) 119o
22) Let A= 2i +6j - 3k and B= 4i +2j +k the vector sum A+B is:
a) 6i +8j -2k
b) -2i +4j -4k
c) 2i -4j +4k
d) 8i +12j -3k
23) Let A= 2i +6j - 3k and B= 4i +2j +k the vector difference A-B is:
a) 6i +8j -2k
b) -2i +4j -4k
c) 2i -4j +4k
d) 8i +12j -3k
23) Let A= 2i -3j and B= i -2j then the vector A-2B is:
a) j
b) -j
c) 4i -7j
d) 4i +j
24) You are given A= i + 2k, and B = 3i - 2j. The dot product A⋅B is
a) -1
b) 3
c) 3i -2 j + 2k
d) 3i
25) You are given A= 2i +6j-3k, and B = 4i + 2j+k. The dot product A⋅B is
a) 12i -14 j -20k
b) 8i +12 j -3k
c) 23
d) 17
b) 0
c) k
d) -k
b) 0
c) j
d) k
b) 0
c) i
d) -i
b) 0
c) j
d) -j
26) i⋅j is equal to
a) 1
27) i⋅i is equal to
a) 1
28) k × j is equal to
a) 1
29) k × i is equal to
a) 1
30) The value of i ⋅ (k × i
a) 1
)
b) -1
c)
3
d) 0
3
31) The value of i ⋅ (k × j )
a) 1
b) -1
c)
3
d) 0
4