Solved Past Papers MCQs of MDCAT for the preparation of Medical and Dental College Admission Test and other medical tests.
Q.26 Two waves of slightly different frequencies and traveling in same direction produce ________
A) Interference. C) Stationary waves.
B) Polarization. D) Beats.
Q.27 A single mode step index fibre has core of about __________ μm diameter
A) 50 to 1000. C) 30.
B) 50. D) 5.
Q.28 A 5 Ohm resistor is indicated by a single __________ color band around its body.
A) Red. C) Blue.
B) Green. D) Brown.
Q.29 Practically __________ current flows in a reverse biased p-n junction.
A) No. C) Few milliamperes.
B) Very large. D) Both A and C.
Q.30 Cesium coated oxidized silver emits electrons for __________ light.
A) Infrared. C) Visible.
B) Ultraviolet. D) Green.
Q.31 The cobalt is absorbed by
A) Bones. C) Liver.
B) Skin. D) Thyroid gland.
Q.32 In a step-down transformer the output current __________
A) Is reduced. C) Remains same.
B) Is increased. D) None of these.
Q.33 Force in terms of base units is expressed as
A) kg ms-2. C) kg m2s-3.
B) kg m2s-2. D) None of these.
Q.34 100 joules work has been done by an agency in 10 seconds. What is power of agency?
A) 1000 watt. C) 10 watt.
B) 100. D) 0.10 watt.
Q.35 The acceleration is proportional to the displacement and is directed towards mean position in __________ motion.
A) Gravity. C) Uniform.
B) Simple harmonic. D) Projectile.
Q.36 In gases, the speed of sound is inversely proportional to __________ of the density when other factors are same.
A) Square root. C) Third power.
B) Square. D) Third root.
Q.37 A watch maker uses __________ to repair the watches.
A) Telescope. C) Convex lens.
B) Convex mirror. D) Concave lens.
Q.38 A 2m long pipe is open at both ends. What is its harmonic frequency?
A) 42.5 Hz. C) 220 Hz.
B) 85 Hz. D) None of these.
Q.39 A wire has resistance 100 Ohm at 0 oC and 200 Ohm at 100 oC. What is its temperature coefficient in K-1?
A) -0.01. C) 0.01.
B) -1/273. D) 1/273.
Q.40 The net magnetic field created by the electrons within an atom is due to the field created by their __________ motion.
A) Orbital. C) Orbital & spin.
B) Spin. D) Orbital x spin.
Q.41 At high temperature, the proportion of __________ wavelength radiation increase.
A) AM radio. C) Shorter.
B) Long radio. D) Both A and C.
Q.42 In photoelectric effect removal of photons is observed at _________ energies.
A) Low. C) Intermediate.
B) High. D) Both A and C.
Q.43 Which device is the most efficient?
A) Nuclear reactor. C) Silicon solar cell.
B) Storage battery. D) Dry battery cell.
Q.44 The units of E in E=mc2 are
A) kg m s-2. C) kg m2 s-2.
B) N m s-2. D) Both B and C.
Q.45 Work done on a body equals change in its __________ energy.
A) Total. C) Kinetic.
B) Potential. D) All of these.
Q.46 A pipe varies uniformly in diameter from 2 m to 4 m. An incompressible fluid enters the pipe with velocity 16m/sec. What is velocity of fluid when it leaves the pipe?
A) 64 m/sec. C) 8 m/sec.
B) 32 m/sec. D) 4 m/sec.
Q.47 Transverse waves cannot be setup in __________
A) Metals. C) Fluids.
B) Solids. D) Soil.
Q.48 The ratio of the __________ is called magnification.
A) Image size to object size. C) Eyepiece size to object size.
B) Object size to image size. D) None of these
Q.49 Which of the following has the highest resistivity?
A) Germanium. C) Copper.
B) Silver. D) Platinum.
Q.50 An n-type semi-conductor is made by doping silicon crystal with __________
A) Indium. C) Arsenic.
B) Aluminium. D) Both B and C.
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- Solved Past Papers MCQs of MDCAT 2
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