MDCAT Physics MCQ Test With Answer for Physics Chapter wise

In SHM there is always a constant ratio between displacement of a body and its:

• Velocity A
• Period B
• Mass C
• Acceleration D

Who confirm the wave theory of light ?

• Newton A
• Michelson B
• Newton C
• Thomos Young D

The image of an object 5 mm length is only 1 cm high. The magnification of the lens is

• 1 A
• 0.2 B
• 2 C
• 0.1 D

Who attempted to measure the speed of light

• Gallileo A
• Michelson B
• Newton C
• None of these D

A convex lens has focal length F.An object is placed at P then

• Image is formed at + ∞ and is real A
• Image is formed at + ∞ and is virtual B
• Image is formed at + ∞ and is real C
• Image is formed at + and is virtual D

• 
  A
• 
  B
• 
  C
• 
  D

Stress maybe:

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

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

• A A
• 2 A B
• 3 A C
• 4 A D

The eye piece of a compound microscope acts as a

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

The frequency of second's pendulum is:

• 0.5 Hz A
• 1.0 Hz B
• 1.5 Hz C
• 2 Hz D

Which of the following is the most common method to obtain polarized light?

• selective absorption A
• reflection from different surfaces B
• refraction through crystals C
• scattering by small particles D

The number of base units in SI are:

• Four A
• Five B
• Six C
• Seven D

When interference of light takes place

• Energy is created in the region of maximum intensity A
• Energy is destroyed in region of maximum intensity B
• Conservation of energy hold goods and energy is redistributed C
• Conservation of energy does not hold good D

A proton, accelerated through a p.d V has a certain de Broglie wavelength. In order to have the same de Broglie wavelength, an 𝑎 −particles must be accelerated through a potential difference:

• 4V A
• 8V B
• V/4 C
• V/8 D

How many types of strain is

• 1 A
• 2 B
• 3 C
• 4 D

Substances which undergo plastic deformation until they break are called:

• Ductile A
• Brittle B
• Malleable C
• Soft D
• Hard E

Insulators are those materials in which valence band is

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

On a rainy day if there is an oil drop on tar road colored rings are seen around this drop This is because of

• Interference pattern produced due to thin oil film A
• Diffraction pattern B
• Polarization C
• Total internal reflection of light D

A body moving in a circular path with a constant speed has a

• Constant velocity A
• Constant kinetic energy B
• Constant acceleration C
• Constant displacement
  D

The phenomenon of radioactivity is associated with:

• Fission of nucleus A
• Disintegration of neutrons B
• Emission of spectral lines C
• Spontaneous disintegration of the nuclei of atoms D

The doped semi-conductors materials are known as

• intrinsic semi-conductor A
• extrinsic semi-conductor B
• either of them C
• none of them D

To observe interference of light the condition which must be met with is that the sources must be:

• Monochromatic A
• Phase coherent B
• Both of above C
• None of above D

In order to perform experiment, Davisson and Germer used accelerating voltage of:

• 54V A
• 120V B
• 220V C
• 400V D

The band full of electrons, which donot play any part in the conduction process is known as

• Conduction band A
• Forbidden energy band B
• Valence band C
• Completely filled band D

The distance between the top adjacent slits on diffraction grating is called

• element A
• grating element B
• aperture C
• slit D

As the working substance of a heat engine completes a cycle, there is no change in:

• Internal energy A
• Pressure B
• Volume C
• All of these D

An engine pumps out 40 kg of water in one second. The water comes out vertically upwards with a velocity of 3ms-1 . What is the power of engine in kilowatt?

• 1.2kW A
• 120kW B
• 12kW C
• 1200kW D

The critical temperature of lead is

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

Graham Bell photo phone used a modulated beam of

• Reflected sun light A
• Refracted sun light B
• Diffracted sun light C
• None of these D

Photo cells are used for :

• Security and counting system A
• Automatic door system B
• Automatic street lighting C
• All of these D

A pulse of light in the optical fibres represents the number

• 0 A
• 1 B
• 2 C
• 3 D

The tip of a needle does not give a sharp image it is due to

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

The atoms molecules or ions in a crystalline solids are at room temperature

• Motionless A
• Vibrate violently B
• Fixed C
• Simply vibrate D

Mirage is a phenomenon due to

• Reflection of light A
• Refraction of light B
• Total internal reflection of light C
• Diffraction of light D

The ‘emf ’ is always even when no current is drawn through the battery of the cell:

• Zero A
• Present B
• Absent C
• Maximum D

The idea that all magnetic effects may be due to circulating currents (i.e moving charges) Was first held by

• Ampere A
• Faraday B
• Lenz C
• Gauss D

A current which demagnetize the material completely is called

• Applied current A
• Coercive current B
• Maximum current C
• None of these D

Electromagnetic waves from a source were found to be significantly diffracted when passing through gaps of the order of 10 m. What type of waves are they likely to be?

• gamma waves A
• light waves B
• microwaves C
• radiowaves D

An engine pumps up 100 kg of water through a height of 10m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine? (Take g = 10ms^-2)

• 33 kW A
• 3.3kW B
• 0.33kW C
• 0.033kW D

What is the unit of the Young's modulus?

• N m^-2 A
• N m^-1 B
• N m C
• N m² D