MDCAT Physics MCQ Test With Answer for Physics Chapter wise

The practical use of services by optic fiber is

• Two way television A
• World processing B
• Image transmitting and receiving equipment C
• All of these D

In proportional limit (σ) of material, the stress increases with strain

• Linearly A
• Constant B
• Abruptly increases C
• None of these D

The optical fibre is covered for protection with

• rubber jacket A
• plastic jacket B
• steel jacket C
• copper jacket D

If the temperature difference between hot and cold body is greater the heat engine is:

• Not efficient A
• Less efficient B
• More efficient C
• NOne of above D

An optical fibre with its protective case may be typically

• 6 m A
• 6 mm B
• 6 cm C
• 6 nm D

When a mirror of a Michelsion's interferometor is moved a distance of 0.5 mm, 2000 fringes are observed, the wavelength of the light used is

• 5000 mm A
• 5000°A B
• 500 cm C
• 2000°A D

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

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

When resistances are connected in Parallel, the effective resistance will be

• Product of the reciprocals of the individual resistances A
• Product of the individual resistances B
• Sum of the reciprocals of the individual resistances C
• Sum of the individual resistances D

Charge to mass ratio (e/m) of a charge particle is also called its:

• Specific charge A
• Specific Force B
• Gyro-magnetic ratio C
• Magneto-mechanical ratio D

The eye piece of a compound microscope acts as a

• Diverging lens A
• Converging lens B
• Diverging mirror C
• Converging mirror D

A steel bar can bear a load of 20 tons. If the thickness of bar is double, then for the same depression it can bear a load of:

• 40 ton A
• 80 ton B
• 160 ton C
• 5 ton D

Which characteristics of wave, established the Huygen's wave theory in 1801?

• polarization A
• interference B
• propagation C
• all of them D

A long solenoid has 20 turns/ cm. The current necessary to produce a magnetic field of 20 mellites inside the solenoid is approximately:

• 1A A
• 2A B
• 4A C
• 8A D

Semiconductor materials have the conductivities generally lies between

• 10^-5 to 10^-6 (Ωm)^-1 A
• 10^-6 to 10^-4 (Ωm)^-1 B
• 10^-7 to 10^-3 (Ωm)^-1 C
• None of these D

The resolving power of telescope depends on

• Focal length of eye lens A
• Focal length of objective lens B
• Length of the telescope C
• Diameter of he objective lens D

The study of atomic structure of crystals by X-rays was initiated by W.H.. Bragg and W.L. Bragg in

• 1920 A
• 1926 B
• 1910 C
• 1914 D

When the light is incident on polarizing angle which of the following is completely polarized?

• Reflected light A
• Refracted light B
• Both reflected and refracted light C
• Neither reflected nor refracted light D

De-Broglie received the Nobel prize in

• 1929 A
• 1937 B
• 1928 C
• 1924 D

The re conversion of light signals into electrical signals takes place due to

• Transmitter A
• Receiver B
• Generator C
• None of these D

A longitudinal sinusoidal wave has wavelength of 1cm and a period of 2sec. Its wavevelocity is:

• 50 cm/ sec A
• 0.5 cm/ sec B
• 5 m/ s C
• 0.005 m/ sec D

The electrons occupying the outermost shell of an atom and the electrons occupying in the energy band are called

• Energy band A
• Valence band B
• Forbidden energy band C
• None of these D

An object is placed at a distance of f/2 from a convex lens.The Image will be

• At one of the foci,virtual and double its size A
• At,3/f real and inverted B
• At 2f,virtual and erect C
• At f,real and inverted D

For a normal AC cycle, during T/2 to T the diode act as:

• Open switch A
• full wave rectifier B
• Close switch C
• All are correct D

Vertical component of velocity of the projectile at any instant ‘t’ from the ground is given by:

• 𝑣𝑖𝑐𝑜𝑠𝜃 A
• 𝑣𝑖𝑐𝑜𝑠𝜃 − 𝑔t B
• 𝑣𝑖𝑠𝑖𝑛𝜃 − 𝑔t C
• 𝑣𝑖𝑠𝑖𝑛𝜃 + 𝑔t D

Unit of solid angle is called:

• Radian A
• Degree B
• Steradian C
• Angstrom D

When two light waves travelling in the same direction are out of phase at any point, their resultant amplitude

• increases A
• decreases B
• remains unchanged C
• increases rapidly D

We can use Fibre optics system for

• Image transmitting A
• Word processing B
• Image processing and recelving C
• All D

A point on the surface of the mirror where principle axis meets is called

• Focus A
• Centre of curvature B
• Pole C
• Aperture D

The function of compensator plate in interferometer is to

• Interfere properly A
• To equalize the distance of M₁ and M₂ B
• Reflecting light properly C
• None of these D

Which of the following is more elastic material?

• iron A
• Aluminum B
• Wood C
• Rubber D

The critical temperature for mercury is

• 1.18 K A
• 4.2 K B
• 3.72 K C
• 7.2 K D

• 
  A
• 
  B
• 
  C
• 
  D

The light waves and radio waves differ in

• Speed A
• Frequency B
• Wavelength C
• Both B and C D

What is the resultant force in the diagram shown?

• Zero A
• 6N to left B
• 6N to right C
• 11N to right D

High temperature superconductors have temperature

• Above 77 K A
• Below 77 K B
• At 77 K C
• None of these D

Which one of the following can act approximately as a source of monochromatic light

• Neon lamp A
• Fluorescent tube B
• Sodium lamp C
• none of these D

Alexander graham bell transmits a voice message via a

• Beam of light A
• Telescope B
• Compound microscope C
• Mirror D

Which of the following have the same unit:

• Both (A) and (C) A
• Both (A) and (B) B
• Modulus elasticty C
• Strain D
• Stress E

The emf of a cell of negligible internal resistance is 2V. It is connected to the series combination of 𝟐𝛀, 𝟑𝛀 𝐚𝐧𝐝 𝟓𝛀 resistance. The potential difference across 𝟑𝛀 resistance will be in volt:

• 0.6 A
• 2/3 B
• 3 C
• 6 D

Focal length of convex lens is maximum for

• Blue light A
• Yellow light B
• Green light C
• Red light D