MCAT 2013 Physics Portion

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English Paper MCAT 2011

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Biology MCAT 2011 Paper of UHS

UHS MCAT 2012 Biology Portion

UHS MCAT 2012 English portion

UHS MCAT 2012 Chemistry Portion

MCAT 2012 Physics Portion

 MCAT 2013 Physics Portion

MCAT 2013 Biology MCQs

MCAT 2013 English MCQs

MCAT 2013 Chemistry MCQs

Answer Key MCAT 2013

Note: The bold  option of each mcq is the true answer.

1.Name the quantity which can be measured by using base unit “kgm2s-3”:
a.pressure
b.power
c.work
d.weight
2.The wavelength ‘ λ’ of a wave depends on the speed ‘v’ of the wave and its frequency
‘f’.Decide which of the following is correct?
a.F=v λ
b.f= λ/v
c.f=v/ λ
d.f=v λ-2
3.Ratio of moment of inertia of two objects ‘A’ and ‘B’ is 2:3.Which of the following is the
ratio of torques ‘A’ and ‘B’ respectively if both are being rotated with constant angular
acceleration?
a.2:3
b.3:2
c.4:3
d.3:4
4.Due to some mechanical fault,a lift falls freely from the top of a multistory building.Which
of the followings is the apparent weight of a man inside the lift,if mass of man is 80kg while
value of ‘g’ is 10ms-2.
a.900N
b.800N
c.700n
d.zero
5.stoke’s law is given by:
a.F=6πηr^2v
b.F=6πηrv
c.F=6πηrv^-3
d.F=6π^2ηr^3v
6.The product of cross-sectional area of the pipe and the fluid speed at any point along
the pipe
a.is zero
b.exponentially increase
c.exponentially decrease
d.remains constant

7.A small leak is developed in a large water storage tank.If the height of water above
leakage is 10m,then find the speed of efflux through the leak
a.10ms-1
b.9.8ms-1
c.14ms-1
d.20ms-1
8.The minimum distance from the eye at which an object can be seen clearly without
strain is called:
a.focal point
b.yield point
c.near point
d.far point
9.In the diffraction of light around an obstacle,the angle of diffraction is increased when:
a.the wavelength of incident light wave is increased
b.the wavelength of incident light wave is decreased
c.the amplitude of the incident light wave is increased
d.the amplitude of the incident light wave is decreased
10.An object 15cm from alens produces a real image 30cm from the lens.what is the focal
length of the lens?
a.10+cm
b.+15cm
c.+20cm
d.+25cm
11.What is the formula for critical angle in case of light through two mediums having
refractive indexes n1 and n2 such that n1>n2?
a.sin-1(n1/n2)
b.sin-1(n2/n1)
c.cos-1(n1/n2)
d.cos-1(n1/n2)
12.In a simple harmonicmotion with a radaius ‘xo’,the velocity of the particle at any point
is:
a.v=ω(x2-xo2)
b.v=ω√(xo-x)
c.v=ω√(x-xo)
d.v=ω√xo2-x2
13.For vibrating mass-spring system,the expression of kinetic energy at any
displacement ‘x’ is given by:
a.1/2kxo2(1-x2/xo2)
b.
c.1/2kxo2

14.speed of sound through a gas is measured as 340ms-1 at pressure P1 and
temperature T1.What will be the speed of sound if pressure of gas is doubled but
temperature is kept constant?
a.340ms-1
b.170ms-1
c.680ms-1
d.342ms-1
15.Variation of amplitude with respect to time for an oscillation object is shown in figure.
a.damped
b.undamped
c.critical
d.heavily damped
16.The stress-strain graph,deduced the following limits successively:
a.propotional limit,yield limit,elastic limit
b.yield limit,elastic limit,propotional limit
c.propotional limit,elastic limit,yield limit
d.elastic limit,propotional limit,yield limit
17.A 4.0m long wire is subjected to stretching force and its length increases by 40cm.The
percent elongation which the wire undergoes is:
a.0.10%
b.10%
c.40%
d.20%
18.what is the value of universal gas constant?
a.8.314 Jmol-1K-1
b.8314 Jmol-1K-1
c.83.14Jmol-1K-1
d.831.4Jmol-1K-1
19.A gas sample contains three molecules each having speed 1ms-1,2ms-1,3ms-1.what

is the mean square speed?
a.6 ms-1
b.2 ms-1
c.14/3 ms-1
d. √14/3 ms-1
20.What is the factor upon which change in internal energy of an ideal gas depends?
a.change in volume
b.change in temperature
c.change in volume and temperature
d.path followed to change internal energy
21.What will be the mathematical form of first law of thermodynamics for a system whose
variation of volume by pressure is shown?
a.Q=W
b.Q=U
c.U=W
d.Q=U/W
22.For a heat engine ‘A’ ratio of Q1 to Q2 is 2/3 while that of heat engine ‘B’,ratio of Q2 to
Q1 is 1/3.What
Is the value ηA: ηB?
a.1:3
b.2:3
c.1:2
d.2:1
23.What is the output Boolean expression of logic diagram shown in figure below:

a.Ab+AB
___ ____
b.(A+B).(A+B)
__ __ __ __
c.(A + B) (A + B)
_ _ _ _
d.A.B + A.B
24.Which of the following is the proper way to study the sinusoidal wave form of voltage?
a.Voltage is connected to ‘Y’ input and time base is switched on.
b.Voltage is connected to ‘X’ input and time base is switched off.
c.Voltage is connected to ‘Y’ input and time base is switched off.
d.Voltage is connected to ‘X’ input and time base is switched on.
25.Three resistances each having value ‘R’ are connected as shown in figure.what is the
equivalent resistance between ‘X’ and ‘Y’?
a.R
b.3R
c.R/3
d.R^3
26.12 volt battery is applied across 6 resistance to have a steady flow of current.what
must be the required potential difference across the same resistance to have a steady
current of one ampere?
a.12V
b.6V
c.3V

d.1V
27.What is the charge stored on a 5uF capacitor charged to the potential difference of
12V?
a.2.4C
b.2.4uC
c.60C
d.60uC
28.A solenoid is cut into two halves.Magnetic induction due to same current in each half
will be:
a.same as original
b.half of the original
c.double of the original
d.four times of the original
29.A long straight current carrying conductor has current directed from bottom to top
when held vertically.what will be the direction of magnetic field lines when observed from
below the conductor?
a.clockwise
b.anticlockwise
c.vertically upward
d.vertically downward
30.The diagram shows a wire,carrying a current ‘I’,placed between the poles of magnet:
In which direction does the force on the wire act?
a.downwards
b.upwards
c.towards the ‘N’pole of the magnet.
d.towards the ‘S’ pole of the magnet
31.X-rays from a given X-ray tube operating under specified conditions have a minimum
wavelength.the value of this minimum wavelength could be reduced by:
a.cooling the target
b.reducing the temperature of the filament.

c.increasing the potential difference between the cathode and the target.
d.reducing the pressure in the tube.
32.Helium-neon lasers are used for the:
a.precise measurement of range finding.
b.optical fibre communication systems.
c.surveying for construction of tunnels.
d.welding detached bone of body.
33.What is the type of characteristic x-ray photon whose energy is given by relation
‘hf=Em-Ek’?
a.K-alpha
b.K-beta
c.M-alpha
d.M-beta
34.Kinetic energy of electrons by applying potential difference V1 across the x-ray tube is
KE1 while V2 potential difference produce kinetic energy equal to KE2.what will be the
value of KE1:KE2,if ratio of potential difference V1:V2=2:3?
a.2:3
b.3:2
c.4:9
d.9:4
35.What will be the relation for the speed of electron accelerated towards the target in
x-ray tube by applying potential difference ‘V’;take mass of electron ‘m’ and charge on
electron ‘e’?
a.v=√2me/V
b.v=√2V/me
c.v=√2meV
d. v=√2Ve/m
36.For what CAT stands in x-ray technology?
a.Capacitor AQmplifier Transistor
b.Cathode Anode Technique
c.Current Amplification Transistor
d.Computerized Axial Tomography
37.During the production of LASER,when the excited state E2 contains more number of
atoms than the ground state E1,the state is known as:
a.ground state
b.excited state
c.metastable state
d.population inversion
38.Emission of radiation from radioactive substance is:

a.independent of both temperature and pressure
b.dependent on both temperature and pressure
c.Independent of temperature but dependent on pressure
d.independent of pressure but dependent on temperature
39.among three type of radioactive radiation,which have strongest penetration power?
a.Alpha
b.Beta
c.Gamma
d.a,B n y have same penetration power
40.Emission off alpha decay from a radioactive substance causes:
a.decrease in ‘A’ by 4 and decrease in’Z’ by 2
b.decrease in ‘Z’ by 4 and decrease in ‘A’ by 2
c.decrease in ‘A’ by 1 and ‘Z’ remains same.
d.decrease in ‘Z’ by 1 and ‘A’ remains same
41.Which one of the following emissions take place in a nuclear reaction?
92TH234
91Pa232+—-
a.alpha
b.beta
c.gamma
d.photons
42.10 joule of energy is absorbed by 10 gram mass from a radioactive source.what is the
absorbed dose?
a.1 gray
b.10 gray
c.100 gray
d.1000 gray
43.Isotopes are those nuclei of an element that have:
a.same atomic number but different mass number.
b.same mass number but different atomic number
c.same mass number as well as atomic number
d.different mass number as well as different atomic number
44.In cloud chamber,the path of B-particles is:
a.straight,thick,short
b.thin,wavy,longer
c.thin,wavy,shorter
d,thin,straight,short