MDCAT Physics MCQ Test With Answer for Physics Chapter wise

If the tensile force is suddenly removed from a wire then its temperature will

• Decrease A
• Increase B
• Become zero C
• Remain constant D

A telescope is rotatable about the same vertical axis as the turntable, with a scale which is

• Main scale A
• Vernier scale B
• Half degree scale C
• None of these D

Hertz is unit of :

• Time period A
• Displacement B
• amplitude C
• Frequency D

A spectrometer is an optical device used to study the spectra from different sources of light which is

• Absorption spectra A
• Emission spectra  B
• Discrete spectra C
• None of these D

Electrons of an isolated atom are bound to the nucleus, and?

• can only have distinct energy level A
• can only have same energy level B
• may or may not have distinct energy C
• none of them D

Shear modulus for brass is

• 36 A
• 39 B
• 51 C
• 65 D

The amount of a substance is measured in:

• Kilogram A
• Litre B
• Mole C
• Both A and C D

The critical temperature of lead is

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

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

• 2 A
• 1 B
• 0 C
• 0.5 D

Such a surface on which all the points have the same phase of vibration is known as

• wavefront A
• amplitude B
• displacement C
• all of them D

Significant figures in 0.0010 are:

• Four A
• Three B
• Two C
• One D

The young s modulus of a wire of length L and radius r is Y if the length is reduced to L/2 and radius to r/2 its young s modulus wire be

• Y / 2 A
• Y B
• 2 Y C
• 4 Y D

If red light is incident on sea water it appears

• Red A
• Green B
• Blue C
• Yellow D

A prism splits a beam of white light into seven component colors. This is so because

• Phase of different colors is different A
• Amplitude of different colors is different B
• Energy of different colors is different C
• Velocity of different colors is different D

The apparent size of an object depends on the angle subtended but it at the eye. As the angle increases the size of the object

• Smaller A
• Larger B
• Very large C
• None of these D

A shortsighted person can see clearly

• Near objects A
• Far objects B
• Objects at 25 cm C
• Objects at infinity D

A two-slit arrangement is set up to produce an interference pattern on a screen. The fringes are too close together for convenient observation. How could the distance between them be increased?

• by using a light of longer wavelength A
• by increasing the width of the slits B
• by decreasing the distance between the screen and slits C
• the distance between the fringes is impossible D

Rest mass energy of electron is:

• 1.02 MeV A
• 0.51 MeV B
• 931 MeV C
• 200 MeV D

The ratio of volume stress/volume strain is called as

• modulus A
• Bulk modulus B
• shear modulus C
• Young's modulus D

Work function of all metals varies from 2 eV to 4eV. It is 4.2 eV for Aluminum and2eV for Sodium. If these two metals are illuminated by same light, the thresholdfrequency ofAluminum is

• Less than Sodium A
• Equal to that of Sodium B
• Grater than Sodium C
• Can’t be decided D

According to Bohr’s theory, a line in the Ballmer series arises when the electron jumps from any of the higher orbits to the orbit with quantum number:

• 1 A
• 2 B
• 3 C
• 4 D

The power output of a full wave rectifier is:

• Equal to H.W.R A
• Twice of H.W.R B
• Half of H.W.R C
• Four times of H.W.R D

For a particle in circular motion the centripetal acceleration

• may be more or less than its tangential acceleration A
• equal to its tangential acceleration a B
• more than its tangential acceleration C
• less than its tangential acceleration D

Bulk modulus is involved when the deformation is

• One dimensional A
• Two dimensional B
• Three dimensional C
• All of these D

Speedometer of an automobile measures

• Average velocity A
• Instantaneous velocity B
• Acceleration C
• Instantaneous speed D

The valence band of an atom in a solid

• is always empty A
• may or may not be empty B
• can never be empty C
• none of them D

The substances which break just after the elastic limit is reached, are known as

• brittle substances A
• ductile substances B
• plastic substances C
• elastic substances D

An electric field can deflect:

• X-rays A
• Neutrons B
• 𝛼 −particles C
• 𝛾 −rays D

The sky appears blue because

• Red light is absorbed A
• Blue light is scattered the most B
• Blue light is absorbed C
• It is its natural color D

If velocity time graph is a straight line parallel to time axis then body is

• Moving with zero acceleration A
• Moving with constant velocity B
• Covering equal displacement in equal intervals of time C
• All of these D

If an electron vertically downwards, then the horizontal component of the earth’s magnetic field will deflect it to wards

• West A
• East B
• North C
• North D

The distance between the two mirrors can be varied by

• Moving glass plate A
• Movable mirror B
• Compensator plate C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

The refractive index of a medium is defined as a ratio

• 
  A
• 
  B
• 
  C
• 
  D

The work done to keep the satellite in the given orbit is.

• Zero A
• infinity B
• unit C
• can’t be decided D

The technological uses of superconductors are

• MRI A
• Magnetic levitation trains B
• Faster computer chips C
• All of them D

In which region of the electromagnetic spectrum does the Lyman series of hydrogen atom lie?

• Infrared A
• Visible B
• Ultraviolet C
• X-rays D

How many major components of fibre optic communication system are

• 4 A
• 5 B
• 3 C
• 2 D

Optical device used in spectrometer

• Simple microscope A
• Compound microscope B
• Telescope C
• Any of them D

The unit of gain (G) for non-inverting amplifier is

• Ampere A
• ohm B
• Volt C
• None of these D