# Solved Past Papers MCQs of MDCAT 4

## Solved Past Papers MCQs of MDCAT 4

Solved Past Papers MCQs of MDCAT for the preparation of Medical and Dental College Admission Test and other medical tests.

PHYSICS

Q.1 When the dimensions of both sides of an equation are equal, then the equation is said to be

A) Simultaneous C) Instantaneous

B) Homologous D) Quadratic

Q.2 Radian is a unit of angular displacement which can also be measured in degrees. How many radians are equal to one degree?

A) 180/π    C) 2π/180

B) π/180    D) π/57.3

Q.3 An elevator is moving upwards with constant velocity of ‘v’. What is a weight of a person of a mass ‘m’ inside the elevator during upward motion?

A) mg + mv C) mg ― mv

B) mg D) zero

Q.4 An object having spherical shape of radius ‘r’ experiences a retarding force F from a fluid of coefficient of viscosity ‘η’ when moving through the fluid with speed ‘v’. What is the ratio of retarding force to speed?

A) 6πη r2 C) 6πη r

B) 6πη/r2 D) 6πη/r

Q.5 When the drag force is equal to the weight of the droplet, the droplet will fall with:

A) High Speed C) Certain acceleration

B) Low Speed D) Constant Speed

Q.6 Life time of electron in metastable state is about _________.

A) 10-5 sec C) 10-8 sec

B) 10-3 sec D) 10-2 sec

Q.7 The density of blood is:

A) Less than water C) Greater than water

B) Nearly equal to water D) Three times that of water

Q.8 Energy radiation absorbed at the rate of one joule per kilogram is called:

A) 1 Rad C) 1 Yellow

B) 1 Sievert D) 1 Gray

Q.9 For interference of light waves to take place, the required condition is

A) The path difference of the light waves from the two sources must be large

B) The interfering waves must be non-coherent

C) The light waves may come from different sources

D) The light waves must come from two coherent sources

Q.10 The property of bending of light around an obstacle and spreading of light waves into geometric shadow of an obstacle is called:

A) Diffraction of Light C) Quantization of Light

B) Polarization of Light D) Interference of Light

Q.11 The normal human eye can focus a sharp image of an object on the eye if the object is located at certain distance called

A) Least Point   C) Far Point

B) Near Point   D) Distinct Point

Q.12 A source of sound wave emits waves of frequency ‘f’. If ‘v’ is speed of sound waves, then what will be the wavelength of the waves

A) v/f    C) v – uo/f

B) vf       D) (v − uo)f

Q.13 The spectrum of a star’s light is measured and the wavelength of one of the lines as the sodium’s line is found to be 589 nm. The same line has the wavelength of 497 nm when observed in the laboratory. This means the star is

A) Moving away from the earth C) Stationary

B) Moving towards the north D) Revolving around the planet

Q.14 What is the period of mass spring system during SHM if the ratio of mass to spring constant is ¼?

A) π C) 1/π

B) 2 π D) ½ π

Q.15 The Lenz’s law refers to induced __________

A) emf. C) Shear.

B) Resistance. D) Currents.

Q.16 A wire is stretched by a force which causes an extension. The energy is stored in it only when:

A) The extension of wire is proportional to force applied

B) The cross-section area of the wire remains constant

C) The wire is not stretched beyond its elastic limit

D) The weight of wire is negligible

Q.17 Which statement is correct:

A) Elasticity is that property of body which enables body to regain its original dimension

B) Elasticity is that property of a body that does not allow it to return to its original shape

C) Elasticity is that property of a body that allows it to retain its original shape and dimension after the stress is removed.

D) Elasticity is that property of a body that obeys Hooke’s law.

Q.18 The net charge on an N-type substance is

A) 0.7 volts C) 0.25 volts

B) 0.3 volts D) 0.07 volts

Q.19 For a gas of volume V in its equilibrium state, if the pressure does change with time then total kinetic energy of gas is constant because

A) Collisions between gas molecules occur C) Collisions must be elastic

B) Collisions between gas molecules occur linearly D) Collisions must be inelastic

Q.20 Which of the following is the proper way to study the sinusoidal waveform of the voltage?

A) Voltage is connected to X input and the time base is switched off

B) Voltage is connected to Y input and the time base is switched on

C) Voltage is connected to Y input and the time base is switched off

D) Voltage is connected to X input and the time base is switched on

Q.21 Electron gun in cathode ray oscilloscope contains

A) Filament, cathode, grid, anodes C) Emitter, base, collector

B) Cathode, anode, capacitor, screen D) Resistance, capacitor, inductor

Q.22 Using the relation for the magnifying power Lo, M = 1 + d/f, if f = 5 cm and d = 25 cm then M will be:

A) 5 C) 6

B) 7 D) 8

Q.23 Resonance occurs when the driving frequency is:

A) Greater than natural frequency C) Less than natural frequency

B) Unequal the natural frequency D) Equal to the natural frequency

Q.24 The force required to bend the normally straight path of a particle into a circular path is called __________ force.

A) Traveling. C) Centrifugal.

B) Bending. D) Centripetal.

Q.25 If 2 A current passes through a resistor when connected to a certain battery. If the resistance is replaced by the double resistance, then the current will become

A) 2 A   C) 6 A

B) 4 A   D) 1 A

## ابو قدامہ شامی کا ایمان افروز واقعہ

ابو قدامہ شامی کا ایمان افروز واقعہ   مدینہ منورہ میں ایک مجاہد اور بزرگ ابو قدامہ شامیؒ تھےجن کے دل میں اﷲ تعالیٰ نے رومیوں کے خلاف جہاد کرنے کا شوق اور ولولہ کوٹ کوٹ کر بھردیا تھا۔ ایک بار وہ مسجد نبوی میں بیٹھے ہوئے اپنے ساتھیوں کے ساتھ […]

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