MDCAT Physics MCQ Test With Answer for Physics Chapter wise

The process of doping causes resistivity of semiconductor to

• Increase A
• Decrease B
• Same C
• Become zero D

The dimensions of Planck’s constant “h” are same as that of:

• Momentum A
• Angular momentum B
• Work C
• Torque D

In case of planets the necessary acceleration is provided by

• Gravitational force A
• coulomb force B
• frictional force C
• centripetal force D

The energy of photon of wavelength 620 nm is:

• 0.5 eV A
• 1.0 eV B
• 1.5 eV C
• 2.0 eV D

If the incident light contains different wavelengths the images of each wavelength for a certain value is diffracted in the

• Same directions A
• Different direction B
• Opposite direction C
• None of these D

In the hysteresis loop, when the current is reduced to zero, the material

• does not retain magnetism A
• retains not retain magnetism B
• retains strong magnetism C
• none of them D

Upon applying some unbalanced external stress the deformation may be observed in

• Length A
• Surface area B
• Volume C
• All of these D

To wavelength of light by his experiment , Newton utilized:

• Wavelength of light A
• Intensity of light B
• amplitude wave C
• None of above D

A positively charged particle is moving perpendicular to a uniform magnetic field. The magnetic force makes the particle to move along:

• An elliptical path A
• A circular path B
• A parabolic path C
• None of these D

Ratio between total intensity of magnetic field at equator to poles is

• 1 : 1 A
• 2 : 1 B
• 1 : 2 C
• 1 : 4 D

A special alloy called Alnico is known as

• Soft magnetic material A
• Hard magnetic material B
• In between soft and hand magnetic material C
• None of these D

Young's modulus for copper is

• 70 x 10 Nm^-2 A
• 91 x 10 Nm^-2 B
• 110 Nm^-2 C
• None of these D

The resistance of operational amplifier between inverting and non-inverting terminal is of the order of:

• Few Ohms A
• Mega Ohms B
• Few Kilo Ohms C
• Micro Ohms D

For multiplication and division purposes, percentage uncertainties are:

• Added A
• Subracted B
• Multiplied C
• Divided D

Least distance of distinct vision

• Decrease with increasing age A
• Increases with increasing age B
• Does not vary with age C
• May increase or decrease with age D

Successive dark and bright fringes are formed each time the moveable mirror in Michelsion's interferometer is moved a distance

• λ/2 A
• λ/4 B
• λ C
• 3/2λ D

Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about

• 40 ns A
• 30 ns B
• 32 ns C
• 33 ns D

A closed organ pipe and an open organ pipe have their first overtones of identicalfrequency. Their respective lengths are in the ratio:

• 1 : 2 A
• 4 : 3 B
• 2 : 3 C
• 3 : 5 D

If the focal length of objective is 10 mm find its magnification

• 18 A
• 19 B
• 20 C
• 21 D

Which of the following can become a good temporarily magnet?

• iron A
• steel B
• both of them C
• none of them D

A mode of propagation of light through optical fibre in which the light within the fibre is

• Reflected A
• Refracted B
• Continuously refracted C
• None of these D

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

• conductors A
• insulators B
• semi-conductors C
• all of them D

• 
  A
• 
  B
• 
  C
• 
  D

If a source of emf is traversed from positive to negative the potential change will be:

• Positive A
• Negative B
• Zero C
• Constant D

Mole is a unit of measuring:

• amount substance A
• Intensity of light B
• Amount of current C
• Mass D

In SHM, the acceleration is _________ when velocity is____.

• Zero, smallest A
• Smallest, zero B
• Zero, Zero C
• Zero, greatest D

Geo stationary satellite remains

• Stationary A
• Both "A" & "B" B
• Appear C
• None of them D

The scattering of X-rays from atoms in a crystalline lattice gives rise to

• Interference A
• Diffraction B
• Reflection C
• None of these D

The typical wavelength of the signal which we sent in the optical fibre is

• 1000 nm A
• 100 m B
• 1.3 mn C
• 1.3μm D

In the stress-strain graph stress is increased linearly with strain until a point is reached this point is known as

• Plastic limit A
• Plastic deformation B
• Proportional limit C
• Elastic behaviour D

A mental wire is stretched by suspending weight to if x is the longitudinal strain and y is young s modulus of elasticity then the elastic potential energy per unit volume is

• 1/2 y x² A
• x² / 2y B
• y² / 2x C
• x² / 2y D

How is the interference pattern in Young's double slit experiment affected if the sodium light is replaced by red light of the same intensity

• The fringes will vanish A
• The fringes will become brighter B
• The fringes will increase C
• The fringes will decrease D

Stress maybe:

• Tensile A
• Compressive B
• Compressible C
• All of these D
• Both (A) and (B) E

To find wavelength of light by his experiment. Newton utilized:

• Principle of phase change A
• Snell's Law B
• Bragg's law C
• Both (A) and (C) D

In thermodynamics, the change in internal energy depends upon:

• The path taken between initial and final states A
• The initial state only B
• The final state only C
• Initial and final states D

A fibre optic communication system consists of

• one major component A
• two major components B
• three major components C
• four major components D

The measure of the deformation in a solid when stress in applied to it is called

• elastic constant A
• Young's modulus B
• strain C
• elasticity D

The speed of light in vacuum or in air is

• 3 x 10¹⁰ m ! s A
• 3 x 10⁹ m ! s B
• 3 x 10⁸ m ! s C
• 3 x 10⁷ m ! s D

In YDS experiment, fringe spacing means the distance between two consecutive_____fringes:

• Bright A
• Dark B
• Any of A or B C
• None of these D

The speed at which light travels within the material depends upon

• Refractive index of medium A
• Wavelength B
• Frequency C
• Intensity D