Class 12 Physics MCQ

Test your knowledge with important Class 12 Physics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Class 12 Physics MCQs on Bissoy. Bissoy App

• Which of the following is false?
  ক

  Bandpass filters filter out the unwanted frequencies

  খ

  The transmitting antenna transmits the signal over large distances

  গ

  Attenuation should be reduced for a signal

  ঘ

  The modulated signal is quite strong
• Which of the following statements is wrong?
  ক

  Ground wave propagation can be sustained at frequencies 500 kHz to 1500kHz

  খ

  Satellite communication is useful for the frequencies above 30 MHz

  গ

  Space wave propagation takes place through tropospheric space

  ঘ

  Skywave propagation is useful in the range of 30 to 40 MHz
• Which of the following cannot travel in vacuum?
  ক

  Radio waves

  খ

  Gamma Waves

  গ

  Infrared Waves

  ঘ

  Infrasonic waves
• Which of the following is a correct statement?
  ক

  Beta rays are the same as for cathode rays

  খ

  Gamma rays are high energy neutrons

  গ

  Alpha particles are singly ionized helium atoms

  ঘ

  Protons and neutrons have the same mass
• Which of the following statements is not true?
  ক

  The resistance of intrinsic semiconductor decreases with the increase of temperature

  খ

  Doping pure Si with trivalent impurities gives p-type semiconductors

  গ

  The majority carriers in n-type semiconductors are holes

  ঘ

  A p-n junction can act as a semiconductor diode