MDCAT Physics MCQ Test With Answer for Physics Chapter wise

In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width:

• Becomes doubled A
• Becomes 4 times B
• Is halved C
• Remains the same D

In a never system, the repeaters are placed at about

• 50 km A
• 75 km B
• 100 km C
• 125 km D

Resolving power of a telescope depends on:

• The magnification of eyepiece A
• The focal length of objective lens B
• Diameter of objective lens C
• Refractive index of objective lens D

• 
  A
• 
  B
• 
  C
• 
  D

The rate of change of momentum of a molecule is equal to:

• Pressure A
• Work B
• Density C
• Force D

Confining the light vibrations in one plane is called:

• Reflection of light A
• Interference of light B
• Polarization of light C
• Diffraction of light D

The ultimate tensile strength (UTS) can be regarded as the

• Maximum strength of the material A
• Nominal strength of the material B
• Minimum strength of the material C
• None of these D

Point out angle/angle at which the sin θ and tan θ have the same value

• 2^o and 8^o A
• 4^o and 6^o B
• 2^o and 4^o C
• 8^o and 10^o D

In thin film colours are due to

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

In the Young's double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled the fringe width is

• Halved A
• Unchanged B
• Doubled C
• Quadrupled D

The maximum kinetic energy of emitted photoelectrons depends upon:

• The intensity of incident light A
• Frequency of incident light B
• Metal surface C
• Both frequency of incident light and metal surface D

A radioactive substance has a half-life of 4 months. Three-fourths of the substance will decay in:

• 5months A
• 6months B
• 8months C
• 7months D

Physics deal with the study of

• Matter A
• Energy B
• Both of them C
• Human body D

The metals become electrically conducting due to their

• Ductility A
• Hardness B
• Structure C
• All of them D

Young's modulus for brass is

• 40 A
• 60 B
• 90 C
• 91 D

To get three images of a single object,one should have two plane mirrors at an angle of

• 90° A
• 120° B
• 30° C
• 160° D

When the stress change length of a body, it is called:

• Shear stress A
• Tensile stress B
• Volume stress C
• Any of these D
• None of these E

Polymers have specific gravity which is:

• Low as compared to even the lightest metal A
• High as compared to the heaviest metal B
• Intermediate C
• Any of these D
• None of tese E

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

Frequency of red colour as compared to that of violet colour is:

• Equal A
• Smaller B
• Greater C
• None of these D

In an astronomical telescope is the objective has the focal length f_o is

• Small A
• Very small B
• Long C
• None of these D

For interference to occur, the light coming from the two slits should

• be monochromatic A
• come from the same source B
• have a constant path difference C
• all of them D

If the angle of refraction is 90^o, for which the angle of incidence is called

• Incident angle A
• Critical angle B
• Angle of emergence C
• None of these D

Molecules of a solid possess:

• Translation motion A
• Vibration motion B
• Rotation motion C
• Linear motion D

A pulse of light in the optical fibres represents the number

• 0 A
• 1 B
• 2 C
• 3 D

In uniform circular motion, the factor that remains constant is:

• Linear velocity A
• Acceleration B
• Speed C
• All of these D

Significant figures in 1.0 x10^-3 are

• Five A
• Four B
• Two C
• Three D

A photo cell receives light from a source at 50 cm away and produces 40mAcurrent inthe circuit. When the same source at is at distance 1 m from photo cell,current in the circuit will be

• 20 mA A
• 80mA B
• 60 mA C
• 10 mA D

The Hook's law defines

• Modulus of elasticity A
• Stress B
• Strain C
• Elastic limit 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 light which has components in all directions is called

• unpolarized light A
• polarized light B
• intense light C
• none of them D

When a strength changes the length of a body,it is called

• Tensile stress A
• Shear stress B
• Compressional stress C

In an astronomical telescope the eye piece has the focal length f_e if

• Short A
• Long B
• Extremely long C
• None of these D

In the equation vf²-vi²=2as, the dimension of 2as is:

• [LT^-2] A
• [LT^-1] B
• [L] C
• [L²T^-2] D

Significant figures in 1.0 x10^-3 are:

• Two A
• Three B
• Four C
• Five D

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting calculate the focal length of objective

• 100 cm A
• 10 cm B
• 20 cm C
• 25 cm D

Stress is defined in terms of:

• Applied force A
• Deformation B
• Formation C
• Any of these D
• None of these E

polymeric solids have

• low specific gravity A
• high specific gravity B
• either of them C
• none of them 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

The phenomenon of diffraction also contains the phenomenon of

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