Physics MCQ

Test your knowledge with important Physics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Physics MCQs at Bissoy

• The wave theory of light can explain
  ক

  Comptom effect

  খ

  Photoelectric effect

  গ

  Black body spectrum

  ঘ

  Interference of light
• The scientist who first sent electromagnetic waves to distant places is
  ক

  James Clerk Maxwell

  খ

  Heinrich Hertz

  গ

  Thomas Alva Edison

  ঘ

  John Logie Baird
• Which of these waves can be polarized ?
  ক

  Sound waves in air

  খ

  Longitudinal waves on a string

  গ

  Transverse waves on a string

  ঘ

  Light waves
• When a strong beam of light is passed through a colloidal solution, the light will
  ক

  Be scattered

  খ

  Pass unchanged

  গ

  Be absorbed

  ঘ

  Be reflected
• The wave of theory of light is based on
  ক

  The laws of reflection

  খ

  The laws of refraction

  গ

  The inverse square law

  ঘ

  Huyghens' principle
• Lamberts law is related to
  ক

  Reflection

  খ

  Refraction

  গ

  Interference

  ঘ

  Illumination
• Which of the following waves cannot be polarised?
  ক

  Radio

  খ

  Ultra violet

  গ

  Infrared

  ঘ

  Ultrasonic
• A soap bubble shows colours when illuminated with white light. This is due to
  ক

  Diffraction

  খ

  Polarisation

  গ

  Interference

  ঘ

  Reflection
• Golden view of sea shell is due to
  ক

  Diffraction

  খ

  Dispersion

  গ

  Polarization

  ঘ

  Reflection
• Which of the following phenomenon helps to conclude that light is a transverse wave?
  ক

  Interference

  খ

  Diffraction

  গ

  Polarisation

  ঘ

  Refraction
• The p wave of a normal Electrocardiogram indicates
  ক

  Atrial depolarization

  খ

  Ventricular repolarization

  গ

  Atrial repolarization

  ঘ

  Ventricular depolarization
• In quantum mechanics a particle is represented by a
  ক

  Wave

  খ

  Wave packet

  গ

  Particle

  ঘ

  None of the above
• The Laser is a beam of radiations which are
  ক

  Non-coherent and monochromatic

  খ

  Coherent and monochromatic

  গ

  Non-coherent and non-monochromatic

  ঘ

  Coherent and non-monochromatic
• Universal gates are
  ক

  AND and OR

  খ

  OR and NOT

  গ

  NAND and NOR

  ঘ

  AND and XOR
• A metal semiconductor junction diode is called ________
  ক

  Schottky diode

  খ

  Photo diode

  গ

  Tunnel diode

  ঘ

  P-N Junction diode
• Which one among the following components can not be developed within an ''integrated circuit"?
  ক

  Diode

  খ

  Triode

  গ

  Transformer

  ঘ

  Transistor
• Solids which conduct electricity at higher temperature but not at lower temperature are called
  ক

  Super-conductor

  খ

  Metallic-conductor

  গ

  Semi-conductor

  ঘ

  Insulator
• A NOT gate can be implemented by:
  ক

  A single diode

  খ

  Two diodes

  গ

  A single resistor

  ঘ

  A single transistor
• Which of the following is used for regulated electric supply ?
  ক

  Zener diode

  খ

  Junction diode

  গ

  Gun diode

  ঘ

  Tunnel diode
• The impurity atoms with which silicon should be doped to make p-type semiconductors are
  ক

  Phosphorus

  খ

  Antimony

  গ

  Boron

  ঘ

  Germanium
• The width of depletion layer of a P-N junction
  ক

  Decreases with light doping

  খ

  Increases with heavy doping

  গ

  Is independent of applied voltage

  ঘ

  Is increased under reverse bias
• For which one of the following, ''Diodes" are generally used for?
  ক

  Rectification

  খ

  Amplification

  গ

  Modulation

  ঘ

  Filtration
• Addition of suitable impurities into semiconductor, is called
  ক

  Doping

  খ

  Mixing

  গ

  Forming

  ঘ

  Diluting
• Instrument for measuring blueness of the sky or ocean is called ________
  ক

  Bathymeter

  খ

  Ceraunograph

  গ

  Cyanometer

  ঘ

  Barometer
• Which one of the following is used for sun glasses ?
  ক

  Pyrex glass

  খ

  Flint glass

  গ

  Crooks glass

  ঘ

  Crystal glass
• What is a compound microscope?
  ক

  A microscope that has one lens.

  খ

  A microscope that has two sets of lenses : an occular lens and an eyepiece.

  গ

  A microscope whose lenses are concave.

  ঘ

  A microscope whose lenses are convex.
• The sky appears blue due to
  ক

  Rayleigh scattering

  খ

  Mie scattering

  গ

  Back scattering

  ঘ

  None of the above
• The redness in atmosphere at Sunrise and Sunset is due to :
  ক

  Refraction of light

  খ

  Reflection of light

  গ

  Dispersion of light

  ঘ

  Scattering of light
• What is colour of light related to ?
  ক

  Amplitude

  খ

  Frequency

  গ

  Quality

  ঘ

  Velocity
• Fibre optics work on the principle of
  ক

  Scattering of light

  খ

  Total internal absorption

  গ

  Total internal reflection

  ঘ

  Optical rotation