MDCAT Physics MCQ Test With Answer for Physics Chapter wise

Force applied on a unit area of a body to produce any change in its shape, Volume or length of a body is called:

• Strain A
• Stress B
• Young's modulus C
• Bulk modulus D
• Either (C) or (D) E

When the mass attached to a spring begins to move left or right from the equilibrium position, its P.E.

• Increases A
• Decreases B
• Remain constant C
• None of these D

The materials which are used in selective absorption method to polarize the light are

• chronic substances A
• organic substances B
• inorganic substances C
• diachronic substance D

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structures are

• 5 A
• 7 B
• 9 C
• 14 D

Multi-mode step index fibre index fibre is used to send

• white light A
• green light B
• a strong monochromatic light C
• yellow light D

The property of light which makes light possible to be transmitted into inaccessible place is

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

A usual way to obtain a plane wave is to place point source of light at the focus of a

• concave lens A
• convex lens B
• both of them C
• either of them D

The length and width of a rectangular plate are measured to be 15.3 cm, and 12.80 cm, respectively the area of plate is:

• 195.84 A
• 195.8 B
• 195 C
• any of these D

• 
  A
• 
  B
• 
  C
• 
  D

Bulk modulus is involved when the deformation is:

• One dimentional A
• Two dimentional B
• Three dimentional C
• Any of these D
• None of these E

Example of physical quantities are:

• Length A
• Colour B
• Effect of music C
• All of these D

A wire is stretched to double of its length. Its train is:

• 2 A
• 1 B
• 0 C
• 0.5 D

Within each domain, the magnetic fields of all the spinning electrons are

• parallel A
• antiparallel B
• perpendicular C
• all of them D

An oil film floating on water surface show colours due to

• Interference A
• Diffraction B
• Scattering C
• Reflection D

If the radius of the circular path of particle going around the circle is doubled without changing its frequency of rotation, then centripetal force on it is.

• doubled A
• halved B
• unchanged C
• quadrupled D

According to Huygen's principle, every point of a wavefront may be considered as a source of

• primary wavelets A
• secondary wavelets B
• either of them C
• both of them D

In semiconductor Si or Ge a missing electron in covalent bond from an atom is a

• Charged atom A
• Hole B
• Ion C
• All of them D

Young's modulus for glass is

• 15 A
• 35 B
• 39 C
• 55 D

Ultra-violet rays differ from X-rays in that ultra - violet rays

• Cannot be diffracted A
• Cannot be polarized B
• Do not affect a photographic plate C
• Have a lower frequency D

In conductors, the valence band and conduction bands are

• Touch each other A
• Overlapped each other B
• Largely overlapped C
• None of these D

The diode charactristics curve is plot between

• I & t A
• V& t B
• V& I C
• None D

Young's modulus for tungsten is

• 90 A
• 190 B
• 390 C
• 590 D

Which of the following pair of quantities do not have the same units?

• Stress, Young's modulus A
• Strain, bulk modulus B
• Stress, bulk modulus C
• None of them D

In terms of energy bands, semiconductors are those materials which at room temperature have conduction band

• Partially filled A
• Full filled B
• Slightly filled C
• None of these D

The maximum wavelength of a transverse wave that can be set up in a string of length Lis

• L A
• 2L B
• V C
• 4L D

The potential difference applied to an X-rays tube is increased. As a result, in the emitted radiation

• The intensity increases A
• The minimum wavelength decrease B
• The intensity remains unchanged C
• Both B & C D

On heating, glass gradually softens into a paste-like state before it becomes a very viscous liquid at almost

• 600°C A
• 7600°C B
• 800°C C
• 900°C D

The valence energy band can never be

• Filled A
• Partially filled B
• Empty C
• None of these D

In Bragg's formula, the path difference should beam integral multiple of the wavelengths

• d sin θ = nλ A
• d sin 2θ = nλ B
• 2 d sin θ = nλ C
• None of these D

. A force "F1" acts on a body through distance "S1" in the direction of motion and does work "W1". Similarly another force "F2" act on same body through distance "S2" but in opposite to the direction of motion and does work "W2". Now if F1 = F2 and S1 = S2 then which statement is correct.

• W1 = W2 A
• W2< W2 B
• W1 > W2 C
• W1 = W2= 0 D

A point on the rim of a wheel 4m in diameter has a velocity of 1600 cm s-1. The angular velocity of the wheel is

• 2 rad s^-1
  A
• 4 rad s^-1
  B
• 6 rad s^-1
  C
• 8 rad s^-1
  D

Significant figures in 0.2020 are:

• Two A
• Three B
• Four C
• Five D

The SI unit of spring constant is identical with that of:

• Force A
• Surface tension B
• Pressure C
• Loudness D

The light signals are sent from the source

• A ordinary source A
• A monochromatic light source B
• A moulticolour source C
• None of these D

Inspite vibrations the force which hold the atoms in their ordered form is

• Vander vall force A
• Cohesive force B
• Adhesive force C
• None of these D

A particular wavelength received from a galaxy is measured on earth and isfound to be 5% more than that its wave length on earth. Hence galaxy is

• Moving towards earth A
• Going away from earth B
• Stationary with respect to earth C
• None D

A plane wavefront is that which has source

• Nearest A
• Distant B
• Near C
• None of these D

The fusion of hydrogen into helium is more likely to take place:

• At high temperature and high pressure A
• At high temperature and low pressure B
• At low temperature and low pressure C
• At low temperature and high pressure D

Which of the following colors suffers maximum deviation in a prism?

• Yellow A
• Blue B
• Green C
• Orange D

Significant figures in 0.2020 are

• Two A
• Three B
• Four C
• Five D