NEET RANCHI

बुद्धा साइन्स एंड टेक्निकल इंस्टीट्यूट
Buddha Science & Technical Institute
Kokar, Ranchi, Jharkhand
JOIN BSTI FOR : IIT-JEE / NEET With BHARAT SIR
PHYSICS : IMPORTANT QUESTION FOR IIT-JEE / NEET
Q. If velocity V, time T and force F are chosen as fundamental
quantities, then dimensions of mass will be
A. [F-1T1V1]
B. [F-1T-1V1]
C. [F1T1V-1]
D. [F1T-2V-1]
ANS : C
V.V.I.
QUESTION

Q. The unit 1 N m-1 is equivalent to
A. 1 eng cm-1
B. 1 eng cm-2
C. 1 J m-1
D. 1 J m-2
ANS : D
V.V.I.
QUESTION

Q. One of the combinations from the fundamental physical constants
is hc / G. The unit of this expression is
A. kg2
B. m3
C. s-1
D. None of the above
ANS : A
V.V.I.
QUESTION

Q. The physical quantities not having same dimensions are
A. Stress and Young`s modulus
B. Speed and (µ0ε0)-1/2
C. Torque and work
D. Momentum and Planck`s constant
ANS : D
V.V.I.
QUESTION

Q. A cube has a side of length 1.2 x 10-2 m. Calculate its volume
A. 1.7 x 10-6 m3
B. 1.73 x 10-6 m3
C. 1.70 x 10-6 m3
D. 1.732 x 10-6 m3
ANS : A
V.V.I.
QUESTION

Q. If momentum (P), area (A) and Time (T) are assumed to be
fundamental quantities, then energy has a dimensional formula
A. [P1 T-1 A-1/2 ]
B. [P1 T-1 A1/2]
C. [P2 T-1 A1]
D. [P1 T1 A-1]
ANS : B
V.V.I.
QUESTION

Q. The volume of a sphere is 1.76 cm3 . The volume of 25 such spheres
will be correctly represented by
A. 0.44 x 102 cm3
B. 44.0 cm3
C. 44 cm3
D. 44.00 cm3
ANS : B
V.V.I.
QUESTION

Q. Out of the following pairs, which one does NOT have identical
dimensions ?
A. Moment of inertia and moment of a force
B. Work and torque
C. Angular momentum and Planck`s constant
D. Impulse and momentum
ANS : A
V.V.I.
QUESTION

Q. In a system of units, if force (F), acceleration (A) and time (T) are
taken as fundamental units, then the dimensional formula of
energy is
A. FA2 T B. FAT2
C. FA-2 T D. FAT
ANS : B
V.V.I.
QUESTION

Q. A force F is given by F = at + bt2 , where t is time. What are the
dimensions of a and b ?
A. MLT-1 and MLT0
B. MLT-3 and MLT-4
C. MLT-4 and MLT1
D. ML-3 T and MLT-4
ANS : B
V.V.I.
QUESTION

Q. Out of the following four dimensional quantities, which one
qualifies to be called a dimensional constant ?
A. Acceleration due to gravity
B. Surface tension of water
C. Weight of a standard kilogram mass
D. The velocity of light in vacuum
ANS : D
V.V.I.
QUESTION

Q. The unit of Planck`s constant is the same as that of
A. Torque
B. Impulse
C. Power
D. Angular momentum
ANS : D
V.V.I.
QUESTION

Q. If energy (E), velocity (V) and time (T) are chosen as the
fundamental quantities, then the dimensions of surface tension will
be
A. EV-2 T-1 B. EV-1 T-2
C. EV-2 T-2 D. E-2 V-1 T-3
ANS : C
V.V.I.
QUESTION

Q. If the uncertainty in the volume of a solid sphere is 6%, then the
uncertainty in the surface area of the sphere is
A. 2%
B. 4%
C. 6%
D. 12%
ANS : B
V.V.I.
QUESTION

Q. The ratio of the dimensions of Planck`s constant and that of the
moment of inertia is the dimension of
A. Frequency
B. Velocity
C. Angular momentum
D. Time
ANS : A
V.V.I.
QUESTION

Q. If pressure p, velocity v and time T are taken as fundamental
physical quantities, the dimensional formula of force is
A. pv2 T2
B. p-1 v2 T2
C. pvT2
D. p-1 vT2
ANS : A
V.V.I.
QUESTION

Q. The dimensions of Planck`s constant are
A. [M2 L2 T-2]
B. [MLT-2]
C. [ML2 T-2]
D. [ML2 T-1]
ANS : D
V.V.I.
QUESTION

Q. If the error in the measurement of radius of a sphere is 2%, then
the error in the determination of volume of the sphere will be :
A. 2%
B. 4%
C. 6%
D. 8%
ANS : C
V.V.I.
QUESTION

Q. Dimensional formula of Stefan`s constant is
A. MT-3K-4
B. ML2 T-2 K-4
C. ML2 T-2
D. ML-2 L0
ANS : A
V.V.I.
QUESTION

Q. The dimensions of coefficient of viscosity are
A. [ML -1T-3]
B. [ML-1 T-1]
C. [ML-2 T-1]
D. [MLT-1]
ANS : B
V.V.I.
QUESTION

Q. From the following pairs of physical quantities, choose the pair that
does not have same dimensions.
A. Angular momentum and Planck`s constant
B. Moment of inertia and moment of force
C. Work and torque
D. Work and energy
ANS : B
V.V.I.
QUESTION

Q. h / 2π has the dimension of
A. Velocity
B. Momentum
C. Energy
D. Angular momentum
ANS : D
V.V.I.
QUESTION

Q. Surface tension has the same dimensions as those of
A. Coefficient of viscosity
B. Impulse
C. Momentum
D. Spring constant
ANS : D
V.V.I.
QUESTION

Q. The dimensions of (µ0ε0)-1/2 are:
A. [L1/2 T-1/2]
B. [L-1 T]
C. [LT-1]
D. [L1/2 T1/2]
ANS : C
V.V.I.
QUESTION

Q. If mass is measure in units of α kg, length in β m and time in γ s,
then calorie would be
A. 4.2 αβ2γ-2
B. 4.2 α-1β2γ2
C. 4.2 α-1β-2γ2
D. 4.2 α-2β-1γ-2
ANS : C
V.V.I.
QUESTION

Q. What are the dimensions of electrical conductivity ? (I is current).
A. ML-3 T3 I2
B. M-1 L3 T3 I2
C. M-1 L-3 T3 I2
D. M-1 L-3 T3 I
ANS : C
V.V.I.
QUESTION

Q. The dimensional formula for gravitational constant G is
A. M-1 L2 T-2
B. M0 L0 T0
C. M-1 L3 T-2
D. M L2T-2
ANS : C
V.V.I.
QUESTION

Q. The dimensional formula of magnetic flux is
A. [ML2T-2A-1]
B. [ML2T-2A-2]
C. [MLT-3A-1]
D. [ML0T-2A-1]
ANS : A
V.V.I.
QUESTION

Q. The dimensional formula of angular momentum is
A. M0 L1T-1
B. M1 L2T-2
C. M1L2T-1
D. M2L1T-2
ANS : C
V.V.I.
QUESTION

Q. Which one of the following is NOT correct ?
A. Dimensional formula of thermal conductivity (K) is M1L1T-3K-1 .
B. Dimensional formula of potential (V) is M1L2T3A-1 .
C. Dimensional formula of permeability of free space (µ0) is M1L1T-2A-2
D. Dimensional formula of RC is M0L0T-1
ANS : B, D
V.V.I.
QUESTION

Q. The quantity which has the same dimensions as that of
gravitational potential is
A. Latent heat
B. Impulse
C. Angular acceleration
D. Specific heat capacity
ANS : A
V.V.I.
QUESTION

Q. Which of the following ratios has the dimension of mass ?
A. Volume /Density
B. Surface tension/(Angular velocity)2
C. Linear momentum/Force
D. Pressure/Power
ANS : B
V.V.I.
QUESTION

Q. Which of the following is a dimensionless quantity ?
A. Magnetic flux density
B. Electric flux density
C. Lumen flux density
D. Optical density
ANS : D
V.V.I.
QUESTION

Q. What is the dimensional formula for work ?
A. [MLT-2]
B. [ML2T-2]
C. [ML3T-2]
D. [ML2T-1]
ANS : B
V.V.I.
QUESTION

Q. The pitch and the number of circular scale divisions in a screw
gauge with least count 0.02 mm are respectively :
A. 1 mm and 100
B. 0.5 mm and 50
C. 1 mm and 50
D. 0.5 mm and 100
ANS : C
V.V.I.
QUESTION

Q. The dimensions of mobility of charge carriers are
A. M-2 T2 A
B. M-1 T2 A
C. M-2 T3 A
D. M-1 T3 A
ANS : B
V.V.I.
QUESTION

Q. The dimensional formula for Reynold`s number is
A. [L0 M0 T0]
B. [L1 M1 T1]
C. [L-1 M1 T1]
D. [L1 M1 T-1]
ANS : A
V.V.I.
QUESTION

Q. In which of the following pairs, the two physical quantities have
different dimensions ?
A. Planck`s constant and angular momentum
B. Impulse and linear momentum
C. Moment of inertia and moment of a force
D. Energy and torque
ANS : C
V.V.I.
QUESTION

Q. The dimension of magnetic field in M, L, T and C (coulomb) is
given as
A. MLT-1 C-1
B. ML-2 C-1
C. MT2 C-2
D. MT-1 C-1
ANS : D
V.V.I.
QUESTION

Q. Dimensions of Planck`s constant are
A. ML2T-1
B. ML2 T-3
C. MLT-1
D. ML3T-3
ANS : A
V.V.I.
QUESTION

Q. The ratio of the dimensions of Planck constant and that of moment
of inertia has the dimensions of
A. Frequency
B. Velocity
C. Time
D. Angular momentum
ANS : A
V.V.I.
QUESTION

Q. The wrong unit conversion among the followings is
A. 1 angstrom = 10-10 m
B. 1 fermi = 10-15 m
C. 1 light year = 9.46 x 1015 m
D. 1 astronomical unit = 1.496 x 10-11 m
ANS : D
V.V.I.
QUESTION

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