Q.1.
The least count of a stop watch is 1/5 second. The time of oscillations of a pendulum is measured to be 25 second. Minimum % error in the measurement of time will be ..
-
29%
a) 0.1%
-
29%
b) 0.8%
-
43%
c) 1.8%
-
0%
d) 8%
Q.2.
The dimensions of e.m.f in MKSQ system are..
-
0%
a) MT-2Q-2
-
14%
b) ML2T-2Q-2
-
57%
c) ML2T-2Q-1
-
29%
d) ML2T-2Q2
Q.3.
Volume of one drop of mercury is 1.76cc volume of 25 such drop will be
-
33%
a) 44cc
-
17%
b) 0.44cc
-
17%
c) 4.4cc
-
33%
d) 44.00cc
Q.4.
The dimension of R in the expression Q=Qo(1-e-t/RC) is given by
-
20%
a) [ML2T-3A-2]
-
0%
b) [ML2T-2A-3]
-
40%
c) [T]
-
40%
d) [M-1L-2T-3A-1]
Q.5.
If K represents kinetic energy, V velocity and T time, and these are chosen as the fundamental unit then, the units of surface tension will be..
-
50%
a) KV-2T-2
-
17%
b) KV-1T-2
-
17%
c) K2V-1T-3
-
17%
d) KV-2T-1
Q.6.
The velocity of water wave is found to be proportional to λaρbgc, where λ is the wave length, ρ is density of water and g is gravitational acceleration. Then the values of a,b,c are
-
40%
a) 1,0, 1
-
0%
b) 1/2, 1, 0
-
60%
c) 1/2, 0, 1/2
-
0%
d) 1/2, 0, 1
Q.7.
E, m, L and G denote energy, mass, angular momentum and gravitational constant respectively. Then the dimensions of El2/m5G2 are
-
25%
a) angle
-
75%
b) length
-
0%
c) mass
-
0%
d) time
Explanation
Q.8.
When 2.0734 is added to 35.2 the sum is
-
30%
a) 37.2734
-
0%
b) 37.273
-
60%
c) 37.3
-
10%
d) 37.27
Q.9.
A body travels uniformly a distance of (12.6±0.2)m in a time (3.0±0.3) s. the velocity of body within error limits is
-
43%
a) (4.2±0.5) m/s
-
29%
b) (4.2±0.3) m/s
-
14%
c) (4.2±0.4)m/s
-
14%
d) (4.2±0.6)m/s
Explanation
Q.10.
The number of particles crossing per unit area perpendicular to X-axis in unit time is where n1 and n2 are number of particles per unit volume for the value of x1 and x2 respectively. The dimensions of diffusion constant D are
-
25%
a) M0LT2
-
25%
b) M0L2T-4
-
0%
c) M0LT-3
-
50%
d) M0L2T-1
Q.11.
When the number 6.03587 is rounded up to the second place of decimals, it becomes
-
6%
a) 6.035
-
59%
b) 6.04
-
29%
c) 6.03
-
6%
d) none of these
Q.12.
if velocity(V), acceleration (A) and Force(F) are taken as fundamental quantities instead of mass(M) Length(L) and Time(T) the dimensions of Young'modulus of elasticity would be ( With MLT young modulus = [ML-1T-2]
-
20%
a) FA2V-2
-
10%
b) FA2V-3
-
60%
c) FA2V-4
-
10%
d) FA2V-5
Q.13.
Suppose the acceleration due to gravity at a place is 10m/sIts value in cm/(minute)2 is ..
-
44%
a) 36×105
-
33%
b)3.6×105
-
22%
c) 6×104
-
0%
d) 36×104
Explanation
Q.14.
the volume of sphere is 1.76cmthe volume of 25 such spheres taking into accountthe significant figure is
-
20%
a) 0.44×102cm3
-
0%
b) 44.0 cm3
-
20%
c) 44cm3
-
60%
d) 44.00cm3
Q.15.
The dimensional formula for permeability 'µ' is given by..
-
50%
a) MLT-2A-2
-
0%
b) M0L-1T
-
0%
c) M0L2T-1A2
-
50%
d) None of the above
Q.16.
The dimensions of self inductance are [IIT 1983]
-
0%
a) MLT-2
-
25%
b) ML2T-1A-2
-
50%
c) ML2T-2A-2
-
25%
d) ML2T-2A-1
Q.17.
A resistance of 6Ω with tolerance of 10% and another of 4Ω with tolerance of 10% are connected in series. The tolerance of combination is about
-
40%
a) 5%
-
20%
b) 10%
-
0%
c) 12%
-
40%
d) 15%
Explanation
Q.18.
In Q105 question , the tolerance when resistance connected in parallel is
-
0%
a) 10%
-
25%
b) 20%
-
25%
c) 30%
-
50%
d) 40%
Explanation
Q.19.
In vernier callipers N divisions of vernier scale coincide with (N-1) divisions of main scale in which length of division is 1 mm. The least count of the instrument in cm is
-
0%
a) N
-
33%
b) N-1
-
33%
c) 1/10N
-
33%
d) (1/N) -1
Q.20.
The dimensions of a rectangular block measured with callipers having least count of 0.01cm are 5mm×10mm×5mm. The maximum percentage error in the measurement of the volume of the block is [ AMU 1995]
-
33%
a) 20%
-
0%
b) 15%
-
33%
c) 10%
-
33%
d) 5%
Explanation
Q.21.
The equation of a wave is given by where ω is an angular velocity and V is the linear velocity. The dimension of k is : (MPPMT1993)
-
0%
a) LT
-
25%
b) T
-
50%
c) T-1
-
25%
d) T2
Q.22.
One 'lux' is equal to [CPMT 1993]
-
0%
a) lumen/m2
-
0%
b) lumen /cm2
-
0%
c) candela/m2
-
100%
d) candela/cm2
Q.23.
Erg m-1 can be the unit of of measurement of [DPET 1993]
-
33%
a) Force
-
0%
b) Momentum
-
33%
c) Power
-
33%
d) Acceleration
Q.24.
The dimensional formula for Entropy is
-
0%
a) MLT-2θ-1
-
50%
b) ML2
-
25%
c) ML2T-2θ-1
-
25%
d) ML-2T-2θ-1
Q.25.
The physical quantity that has no dimensions .. [ EAMCET 1995]
-
20%
a) Angular velocity
-
0%
b) Linear momentum
-
40%
c) Angular Momentum
-
40%
d) Strain
Q.26.
Electron volt is the unit of .. [MPPMT 1993]
-
0%
a) Charge
-
50%
b) Potential difference
-
0%
c) Momentum
-
50%
d) Energy
Q.27.
SI unit of gas constant are .. [ MPPMT 1987]
-
33%
a) Watt K-1mol-1
-
0%
b) Newton K-1mol-1
-
33%
c) Joule K-1mol-1
-
33%
d) Erg K-1mol-1
Q.28.
Universal time is based on [SCRA 1989]
-
50%
a) Rotation of earth on its axis
-
25%
b) Earth's orbital motion around the earth
-
0%
c) Vibration of caesium atom
-
25%
d) Oscillation of quartz crystal
Q.29.
Which of the following is most accurate measurement?
-
0%
a) 3×10-2 cm
-
25%
b) 0.030cm
-
50%
c) 300×10-4 cm
-
25%
d) 30×10-3
Q.30.
Which of the following is not expressed in proper units [MNR 1995]
-
33%
a) Stress / Strain = N/m2
-
0%
b) surface tension = N/m
-
0%
c) Energy = Kg×m /sec
-
67%
d) Pressure = N/m2