MDCAT Past Paper 2022 Part 3 Physics MCQs

MDCAT Past Paper 2022 Part 3 Physics Question with Answer

1. What is the shape of velocity-time graph for constant acceleration?

a.Parabola line

b.Straight line

c.Incline curve

d.Decline curve

Question 1 of 54

2. Which of the following is the correct definition of variable velocity?

a.Unequal distances are covered in equal intervals of time

b.Equal displacements are made in unequal intervals of time.

c.Unequal displacements are made in equal intervals of time

d.Equal displacements are made in equal intervals of time

Question 2 of 54

3. A stone thrown horizontally from the top of a tall building follows a path that is:

a.Circular

b.Made of two straight line segments

c.Hyperbolic

d.Parabolic

Question 3 of 54

4. Which of the following is incorrect?

a.Reaction force on a body is always balanced by the action force

b.Reaction and action forces are always equal

c.Action and reaction forces never act on the same body

d.Newton's Third Law is always valid in all situations

Question 4 of 54

5. A fireman wants to slide down a rope. The breaking load of the rope is 3/4 th of the weight of the man. With what acceleration should the fire man slide down? (Acceleration due to gravity is 'g')

a.g

b.g/4

c.3g/4

d.0

Question 5 of 54

6. When a heavy coin falls a short distance towards the ground it does not reach terminal velocity. Why is this so?

a.The coin has not hit the ground

b.The weight of coin is equal to air resistance

c.The weight of coin increases as air resistance increases

d.The weight of coin is more than air resistance

Question 6 of 54

7. The consumption of energy by a 60 W bulb in 2 s is:

a.120 J

b.60 J

c.30 J

d.0.02 J

Question 7 of 54

8. 130 A long spring, when stretched by a distance x, has potential energy V. On increasing the stretching to nx, the potential energy of the spring will be:

a.nv

b.V/n

c.n^2 V

d.V/n^2

Question 8 of 54

9. Ignoring details associated with friction, extra forces exerted by arm and leg muscles, and other factors, we can consider a pole vault as the conversion of an athlete's running kinetic energy to gravitational potential energy. If an athlete is to lift his body 5 m during a vault, what speed must he have when he plants his pole?

a.5 m/s

b.10 m/s

c.15 m/s

d.20 m/s

Question 9 of 54

10. A particle of mass m at rest is acted upon by a force P for time t. Its kinetic energy after time t is:

a.(P^2t^2)/m

b.(P^2t^2)/2m

c.(P^2t^2)/3m

d.(P^2t^2)/4m

Question 10 of 54

11. The number of revolutions in 3n radians is:

a.1/6

b.3/2

c.2

d.6

Question 11 of 54

12. If a flywheel is rotating at 3.0 rad/s, the time it takes to complete one revolution is about

a.0.67 s

b.1.0 s

c.1.3 s

d.2.1 s

Question 12 of 54

13. A fighter plane is moving in a vertical circle of radius r. Its minimum velocity at the highest point of the circle will be ?

a.V3gr

b.V2gr

c.Vgr

d.(gr/2)

Question 13 of 54

14. Which of the following increase by increasing amplitude?

a.Wavelength

b.Frequently

c.Zero

d.Loudness

Question 14 of 54

15. An airplane travels at a speed of 0.5v where v is the speed of sound. The airplane approaches a stationary observer. The frequency of sound emitted by the aircraft is 200 Hz. Which frequency does the observer hear?

a.400 HZ

b.100 Hz

c.120 Hz

d.180 Hz

Question 15 of 54

16. If the wavelength of light coming from a galaxy shifts towards the red end of spectrum, then galaxy is:

a.Approaching Earth

b.Receding the Earth

c.Stationary

d.Approaching Earth or is stationary

Question 16 of 54

17. The shortest distance between any two points in phase on a wave is called:

a.Displacement

b.Wave speed

c.Wavelength

d.Frequency

Question 17 of 54

18. When will the oscillations stop in the absence of resistive forces?

a.Never

b.After 10 minutes

c.In 10 minutes

d.Immediately

Question 18 of 54

19. The mechanical waves are not generated by:

a.Electric and magnetic fields

b.Coil of springs

c.Ropes

d.Water

Question 19 of 54

20. Reducing mass M of a suspending body to one fourth will change the frequency of oscillation to:

a.One fourth

b.Double

c.Quardruple

d.Half

Question 20 of 54

21. A distant star is receding from the Earth with a speed of 1.40 x 10^7 m/s. It emits light of frequency 4.57 x 10^14 Hz. The speed of light is 3.0 x 10^8 m/s. The Doppler effect formula can be used with light waves. What will be the frequency of this light when detected on Earth?

a.2.04 x 10^13 Hz

b.4.37 x 10^14 Hz

c.4.57 x 10^14 Hz

d.4.79 x 10^14 Hz

Question 21 of 54

22. Thermodynamics is that branch of Physics in which we study

a.relations between heat and mechanical energies

b.relations between heat and ionization energies

c.relations between chemical and mechanical energies

d.relations between kinetic and potential energies

Question 22 of 54

23. When a gas is compressed isothermally, the product of its pressure and volume during the process is:

a.not constant

b.constant

c.zero

d.proportional to entropy

Question 23 of 54

24. Temperature of given mass of a gas is changed from 150°C to 300°C during an isobaric process, volume of the gas will become:

a.Half

b.Double

c.Remain same

d.Less than double

Question 24 of 54

25. A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is

a.U/2

b.U/4

c.4U

d.20

Question 25 of 54

26. What is the potential difference between two points in an electric field if it takes 600 J of energy to move a charge of 2 C between these two points?

a.1200

b.8003

c.300J

d.03

Question 26 of 54

27. Gauss law cannot be used to find which of the following quantity?

a.Electric field intensity

b.Electric flux density

c.Charge

d.Permittivity

Question 27 of 54

28. Which one of the following statements is true?

a.electrostatic force obeys inverse square law while gravitational force does not

b.both gravitational force and electrostatic force are repulsive in nature

c.gravitational force is much weaker than electrostatic force

d.Both electrostatic force and gravitational force don't obey inverse square law

Question 28 of 54

29. The Coulomb's constant k depends upon:

a.nature of medium

b.system of units

c.types of charge

d.nature of medium and system of units

Question 29 of 54

30. A charged particle is moving in a uniform electric field. For the motion of the particle due to the field, which quantity has a constant non-zero value?

a.acceleration

b.displacement

c.rate of change of acceleration

d.velocity

Question 30 of 54

31. A capacitor of capacitance 'C' has a charge 'Q' and stored energy is 'w'. If the charge is increases to '20'. The stored energy will be:

a.2W

b.4W

c.W/4

d.W/2

Question 31 of 54

32. How much potential drop exist across closed switch?

a.OV

b.1V

c.2V

d.3V

Question 32 of 54

33. A 3 V battery is connected in series with ammeter and 2 ohm resistance after short circuiting. What will be the reading of ammeter?

a.1 A

b.1.5 A

c.5 A

d.6 A

Question 33 of 54

34. The resistance of a conductor does not depend on which of the following?

a.area

b.resistivity

c.length

d.mass

Question 34 of 54

35. Which of the following statement is NOT CORRECT about Kirchhoff's rule?

a.Kirchhoff's current rule based upon the law of conservation of charge

b.Wheatstone bridge is an application of Kirchhoff's rule

c.Kirchhoff's rules are more suitable in AC circuits

d.Kirchhoff's voltage rule based upon the law of conservation of energy

Question 35 of 54

36. What do the substances whose resistance decreases with increase in temperature have?

a.high temperature coefficient

b.negative temperature coefficient

c.positive temperature coefficient

d.zero temperature coefficient

Question 36 of 54

37. A low voltage supply with an e.m.f. of 20 V and an internal resistance of 1.5 ohms is used to supply power to a heater of resistance 6.5 ohms in a fish tank. What is the power supplied to the water in the fish tank?

a.41 W

b.50 W

c.53 W

d.62 W

Question 37 of 54

38. Electric forces change the magnitude and direction of velocity while magnetic forces change of velocity

a.Only Magnitude

b.Only direction

c.Magnitude and direction

d.Neither magnitude nor direction

Question 38 of 54

39. Which surface has greater magnetic flux in same magnetic field, each has an area 1 m^2.

a.Circular

b.Rectangular

c.Square

d.Flux is independent of shape

Question 39 of 54

40. The source of magnetic field is:

a.An isolated magnetic pole

b.Static electric charge

c.Nonmagnetic substance

d.Current loop

Question 40 of 54

41. One meter long copper rod is moving with speed 20 m/sec in the magnetic field of strength 0.6 tesla. What is the value of induced emf ?

a.10 v

b.12 v

c.14 v

d.16 v

Question 41 of 54

42. The unit of Ap/At can be written as ?

a.NmA-25

b.NmAs-1

c.NmA-15-1

d.NmA-251

Question 42 of 54

43. Working principal of magnetic levitation train is according to ?

a.Faraday law

b.Max planks law

c.Ohm law

d.Lenz law

Question 43 of 54

44. A copper hoop is held in a vertical east-west plane in a uniform magnetic field whose field lines run along the north-south direction. The largest induced emf is produced when the hoop is ?

a.Rotated about a north-south axis

b.Rotated about an east-west axis

c.Moved rapidly, without rotation, toward the east

d.Moved rapidly, without rotation, toward the south

Question 44 of 54

45. In transformer, there is no linked ? connection between the two coils but they are

a.Magnetic, electrically

b.Electrical, magnetically

c.Magnetic, magnetically

d.Electrical, optically

Question 45 of 54

46. When the temperature of semiconductor suddenly drops to zero kelvin, then a semiconductor acts as:

a.Conductor

b.Semi-conductor

c.Super conductor

d.Insulator

Question 46 of 54

47. If electron, proton, neutron, and alpha particle have same velocity, which of them has the shortest wavelength?

a.Electron

b.Proton

c.Neutron

d.Alpha particle

Question 47 of 54

48. The process of ejection of loosely bound electrons from a certain photo sensitive surface by absorption of photon is called:

a.Compton effect

b.Photoelectric effect

c.Pair production

d.Black body radiation

Question 48 of 54

49. In a photoelectric effect experiment, the stopping potential is:

a.The kinetic energy of the most energetic electron ejected

b.The potential energy of the most energetic electron ejected

c.The photon energy

d.The electric potential that causes the electron current to vanish

Question 49 of 54

50. The line spectrum of hydrogen atom contains the spectral lines in the region of:

a.ultraviolet

b.infrared

c.visible

d.all of these

Question 50 of 54

51. The speed of electron in the first Bohr orbit is:

a.2,19 x 10⁶ ms ^-1

b.2,19 x 10^-6 ms ^-1

c.2.19xx 10⁴ ms^-1

d.2.19xx 10^-4 ms^-1

Question 51 of 54

52. A low energy neutron has RBE factor of 10. How much energy is absorbed by a man of mass 80 Kg if the value of equivalent dose is 400 rem?

a.16 J

b.48

c.32 J

d.64 J

Question 52 of 54

53. It has been observed that Thorium (_90^234) Th is transformed into Protactinium (_91^234) Pa after the emission of particle:

a.Alpha

b.Beta

c.Gamma

d.Alpha, Beta, Gamma

Question 53 of 54

54. The half-life of Strontium (Sr) is 8.70 hours. Its decay constant is:

a.0.000022 s

b.45000/s

c.0.000022 / s

d.0.000032/s

Question 54 of 54

Part 4 English Question with Answer

MDCAT Past Paper 2022 Part 2 Chemistry MCQs

MDCAT Past Paper 2022 Part 4 English MCQs