18 University of Health Sciences, Lahore
Total MCQs: 220 Max. Marks: 1100 ENTRANCE TEST – 2009 For F.Sc. Students Only Time Allowed: 150 minutes
Instructions: i. Read the instructions on the MCQs Response Form carefully. ii. Choose the Single Best Answer for each question. iii. Candidates are strictly prohibited from giving any identification mark except Roll No. & Signature in the specified columns only.
COMPULSORY QUESTION FOR IDENTIFICATION Q-ID. What is the color of your Question Paper? A) White. C) Pink. B) Blue. D) Green. Ans: Colour of your Question Paper is Blue. Fill the Circle Corresponding to Letter ‘B’ against ‘ID’ in your MCQ response form (Exactly as shown in the diagram).
PHYSICS
Q.1 If R1 = 10 kΩ and R2 = 100 kΩ then the gain of op-amplifier as inverting amplifier is:
A) –1 C) –10 B) 10 D) 1
Q.2 If inputs A = 1, B = 0 and output X = 1, then it corresponds to the operation of a: A) AND Gate C) XNOR Gate B) NAND Gate D) NOR Gate
Q.3 The value of Stefan’s Boltzmann Constant is: A) 4.28 x 10-7 Wm-2K-4 C) 3.62 x 10-4 Wm-2K-4 B) 4.28 x 10-4 Wm-2K-4 D) 5.67 x 10-5 Wm-2K-4
Q.4 Einstein’s photoelectric equation is given by: A) hf = ϕ = ½ mv2 C) E = hc2 B) E = mc2 D) hf = ½ mv2
A B C D ID 1 2 3 4
R1
R2
~
Page 2 of 18 Q.5 In Compton Effect, the value of
h moc is given by: A) 1.43 x 10-11 m C) 2.43 x 10-12 m B) 2.56 x 10-12 m D) 3.46 x 10-6 m
Q.6 If a particle of mass 5.0 mg moves with the speed of 8.0 m/sec, then the de-Broglie’s wavelength will be: A) 1.68 x 10-27 m C) 1.65 x 10-29 m B) 1.70 x 10-25 m D) 1.66 x 10-29 m
Q.7 LASER is a device which can produce: A) Intense beam of light C) Coherent beam of light B) Intense, Coherent, Monochromatic beam of light D) Monochromatic beam of light
Q.8 A crack allows greater amount of X-rays to pass, which appears on photographic film as: A) Blue Area C) Bright Area B) Dark Area D) Red Area
Q.9 The emission of γ-radiations from the nucleus is generally represented by the equation:
A) X Z A → X Z A • + γ-radiations C) X Z A • → X Z 1 A + γ-radiations
B) X Z A • → X Z A + β-particles D) X Z A • → X Z A + γ-radiations
Q.10 For intermediate energy of radiations, the dormant process is: A) Compton Effect C) Photoelectric Effect B) Nuclear Effect D) Pair Production
Q.11 The dimensions of gravitational constant “G” are: A) [ML-2T-1] C) [ML-2T-2] B) [M2L-2T-1] D) [M-1L3T-1]
Q.12 Ultraviolent radiations cause: A) Severe Crop Damage C) Decay of Microorganisms B) Sunburn, blindness, skin cancer D) All of the above
Q.13 Unit vector in the direction of vector 2i − 4j will be: A) 2i − 4j √ 6 C) i − 2j √ 5
B) 4i − 2j √ 10 D) i − 2j √ 7
Q.14 If the force of magnitude 8 N acts on a body in direction making an angle 30, its X and Y components will be: A) Fx = 3√3 Fy = 4 C) Fx = 4√3 Fy = 8 B) Fx = 4√3 Fy = 4 D) Fx = 8 Fy = 4√3
Q.15 Two waves of slightly different frequencies and travelling in the same direction lead to: A) Stationary Waves C) Beats B) Interference D) Both B and C
Q.16 What is it that we use to calculate the speeds of distant stars and galaxies? A) Doppler Effect C) Beats B) Interference D) All of the above
Q.17 In Young’s Double Slit Experiment, if the distance between slits and screen is doubled, then fringe spacing becomes: A) Zero C) Doubles of the original value B) One D) Half of the original value
Page 3 of 18 Q.18 In Michelson’s interferometer 792 bright fringes pass across the field of view when its movable mirror is displaced through 0.233 mm using the equation l = m λ 2 the wavelength of light used is: A) 588 nm C) 348 nm B) 620 nm D) 400 nm
Q.19 In Michelson’s Experiment, the formula to calculate the speed of light is: A) c = 2 fd C) c = 16 f d
B) c = 2π f d D) c = 16 fd
Q.20 The information received at the other end of a fibre can be inaccurate due to _______ of the light signal. A) Longer wavelengths C) Intensity B) Frequency D) Dispersion or Spreading
Q.21 The pressure on the other sides and everywhere inside the vessel will be according to the: A) Pascal’s Law C) Boyle’s Law B) Hook’s Law D) Charles’s Law
Q.22 The value of universal; Gas Constant ‘R’ is; A) 8.314 Jmol-2K-1 C) 1.38 Jmol-1K-1 B) 1.38 Jmol-1K-2 D) 8.314 Jmol-1K-1
Q.23 For adiabatic process, the First Law of Thermodynamics is: A) W = ∆U + Q C) Q = W B) Q = – W D) W = – ∆U
Q.24 The entropy of the universe always: A) Decreases C) Remains the same B) Increases D) Both A and B
Q.25 The work done in moving a unit positive charge from one point to another against the electric field is a measure of: A) Capacitance C) Intensity of electric field B) Potential difference between two points D) Resistance between two points
Q.26 In Millikan’s Method, the radius of droplet can be calculated by: A) r = qvt 2ρg C) r2 = 9ηvt 2ρg
B) r2 = 9ηvt ρg D) r = 9ηvt 2ρg
Q.27 The scalar product of i and k is: A) Zero C) 1 B) 90° D) –1
Q.28 If the body is rotating with uniform angular velocity, then its torque is: A) Zero C) Maximum B) Clockwise D) Remains the same
Q.29 Speed of light, radio waves and microwaves in vacuum is: A) 3 x 105 ms-1 C) 3 x 106 ms-1 B) 3 x 103 ms-1 D) 3 x 108 ms-1
Q.30 A body is moving with an initial velocity of 2 kms-1. After a time of 50 secs its velocity becomes 1.5 kms-1. Its acceleration will be: A) 30 ms-1 C) 20 ms-1 B) 40 ms-1 D) 10 ms-1
Page 4 of 18 Q.31 When a car moves with constant acceleration, the velocity-time graph is a:
A) C)
B) D)
Q.32 In elastic collision, when a massive body collides with light body at conditions m1 >> m2 and v2 = 0 ms-1, then the change in velocity will be written as: A) v1’ ≈ − v1 ; v2’ ≈ v1 C) v1’ ≈ v1 ; v2’ ≈ 2v1 B) v1’ ≈ v1 ; v2’ ≈ 0 D) v1’ ≈ − v1 ; v2’ ≈ 0
Q.33 If a certain force acts on an object and changes its kinetic energy from 65 J to 130 J, then work done by the force will be: A) 92.5 J C) 65 J B) 97.5 J D) 130 J
Q.34 A bullet train is lifted above the rails due to magnetic effect, thus friction is reduced to minimum and speed can be enhanced up to: A) 500 Km min-1 C) 1000 Km h-1 B) 500 Km sec-1 D) 500 Km h-1
Q.35 In a certain circuit, if the transistor has a collector current of 10 mA and base current of 50 μA, then the current gain of the transistor is: A) 250 C) 150 B) 100 D) 200
Q.36 A signal that is applied at the inverting input terminal of an op-amplifier undergo amplification, at the output terminal with a phase shift of: A) 0° C) 360° B) 270° D) 180°
Q.37 Solar energy at normal incidence outside the earth’s atmosphere is about: A) 2.5 kWm-2 C) 1.4 kWm-2 B) 0.6 kWm-2 D) 2.0 kWm-2
Q.38 Linear velocity or tangential velocity of any particle moving in a circular path of radius 2 m with angular velocity 8 rads-1 will be: A) 16 ms-1 C) 10 ms-1 B) 4 ms-1 D) 6 ms-1
Q.39 What is torque ‘τ’ in a circular motion? A) τ = mr2π C) τ = mrα B) τ = mr2α D) τ = mr2/α
Q.40 If the mass attached with a spring becomes four times, the time period of vibration becomes: A) One fourth C) Half B) 3/4 D) Double
v t
v t
v t
v t
Page 5 of 18 Q.41 A body of mass 6 g falls under action of gravity. At initial position ‘A’ its P.E. is 480 J and K.E. is 0 J. During its downward journey at point ‘B’ its energies will be (g = 10 ms-2):
A) P.E. = 300 J and K.E. = 180 J C) P.E. = 230 J and K.E. = 250 J B) P.E. = 180 J and K.E. = 300 J D) P.E. = 250 J and K.E. = 230 J
Q.42 A tiny droplet of oil of density ‘ρ’ and radius ‘r’ falls through air under force of gravity. If viscosity of air is ‘η’, the terminal velocity acquired by the oil drop is given by:
A) vt =
4gr2ρ 9η C) vt =
2gr2ρ 9η
B) vt =
9ηr2ρ 4g
D) vt =
9ηr2ρ 2g
Q.43 Torricelli’s theorem be written as: A) v2 = 2g (h1 - h2) C) v2 = 2g (h2 - h1) B) v2 = g (h2 - h1) D) v2 = g (h1 - h2)
Q.44 When the spaceship rotates with ________ frequency, the artificial gravity like earth is produced to inhabitants of the ship: A) 2π R g C) 1 2π R g
B) 2π ℓ g D) 1 2π R g
Q.45 In a microwave oven, the wave produced has a wavelength of 12 cm at a frequency of: A) 2452 Hz C) 2455 Hz B) 2456 Hz D) 2450 Hz
Q.46 Speed of the waves is equal to: A) fλ C) Both A and B B) λ T D) λT
Q.47 A particle carrying charge of 2e falls through a potential difference of 3.0 V. Calculate the energy required by it: A) 9.6 x 10-19 J C) 1.6 x 10-19 J B) 9.1 x 10-19 J D) 6.0 x 10-19 J
Q.48 The deviation of I-V graph from the straight line is due to: A) Decrease in temperature and decrease in resistance B) Increase in temperature and increase in resistance C) Decrease in temperature and increase in resistance D) Increase in temperature and decrease in resistance
6 g
P.E. = 480 J K.E. = 0 J A
B 6 m
3 m
Page 6 of 18 Q.49 The fractional change in resistance per Kelvin is known as: A) Temperature coefficient of resistance C) Linear coefficient of expansion B) Thermal coefficient D) Volumetric coefficient of expansion
Q.50 The energy supplied by the cell to the charge carriers is derived from the conversion of: A) Heat energy into Electrical energy C) Solar energy into Electrical energy B) Chemical energy into Electrical energy D) Mechanical energy into Electrical energy
Q.51 Force experienced by a moving change in a magnetic field is: A) F = BA cosϴ C) F = q (v x B) B) F = μo NI D) F = I (L x B)
Q.52 The value of permeability of free space μo is: A) 4π x 10-7 WbA-1m-1 C) 4π x 10-7 WbA-2m-1 B) 4π x 102 WbA-2m-2 D) 4π x 102 WbA-1m-2
Q.53 What shunt resistance must be connected across a Galvanometer of 20 Ω resistance which gives full scale deflection with 2.0 A current, so as to convert it into an Ammeter of range 10 A? A) 5 Ω C) 3 Ω B) 2 Ω D) 4 Ω
Q.54 The current measuring part of the Avometer consists of number of low resistances connected: A) At an angle of 180° with the galvanometer C) At an angle of 45° with the galvanometer B) Parallel with the galvanometer D) Perpendicular to the galvanometer
Q.55 A charge of two micro coulombs (2 μC) moves with velocity of two meter per second (2 m/sec) in the direction of two Tesla magnetic field. The force that will act on it will be: A) 2 N C) 8 N B) Zero D) 4 N
Q.56 We have two coils placed close to each other. When we switch on the battery connected to primary coil while keeping the sliding contact of rheostat at fixed position, the reading of Galvanometer: A) First increases and then becomes zero B) First increases and then becomes constant at some value C) Increases with the passage of time D) Remains zero
Q.57 Power losses in a transformer can be minimized: A) By increasing turn ratio B) By decreasing turn ratio C) By stopping the flow of Eddy currents D) Using material of the core whose hysteresis area is large
Q.58 In R-L Series circuit, the phase difference between applied voltage and current is given by the angle ϴ which is: A) ϴ = tan-1 LR ω C) ϴ = tan-1 ω g
B) ϴ = tan-1 ωLR D) ϴ = tan-1
ωR L
Q.59 Frequency of L-C circuit will resonate under the driving action of the antenna by angular value of: A) Capacitance C) Inductance B) Impedance D) Resistance
Q.60 To convert the Si crystal into p-type semi-conductor, which group element will be doped: A) Trivalent Element C) Fourth Group Element B) Second Group Element D) Pentavalent Element
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