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Physical World

11th Class - CBSE - Physics - 329 Questions - 0 Concepts

Important Questions

Q1 Single Correct Medium
The electric generator is based on which scientific principle?
  • A. Reflection of ultrasonic waves
  • B. Superconductivity
  • C. Faradays laws of electromagnetic induction
  • D. Magnetic confinement of plasma

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1 Verified Answer | Published on 18th 08, 2020

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Q2 Single Correct Medium
Bose-Einstein condensate is based on which scientific principle?
  • A. Magnetic confinement of plasma
  • B. Trapping and cooling of atoms by laser beams and magnetic fields
  • C. Wave nature of electrons
  • D. Motion of charged particles in electromagnetic fields

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1 Verified Answer | Published on 18th 08, 2020

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Q3 Single Correct Medium
What was the major contribution/discoveries of  Archimedes?
  • A. Principle of buoyancy; Principle of the lever
  • B. Wave theory of light
  • C. Laws of electromagnetic induction
  • D. Generation of electromagnetic waves

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1 Verified Answer | Published on 18th 08, 2020

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Q4 Single Correct Medium
Which of the following does not depict the correct link between technology and physics. ?
  • A. Photocell - Photoelectric effect
  • B. Rocket propulsion - Laws of thermodynamics
  • C. Optical fibres - Total internal reflection of light
  • D. Fusion test reactor - Magnetic confinement of plasma

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Q5 Single Correct Medium
Werner Heisenberg is known for his work on 
  • A. Inelastic scattering of light by molecules
  • B. Quantum mechanics: Uncertainty principle
  • C. Theory of super conductivity
  • D. Expanding universe

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Q6 Single Correct Medium
The Steam engine is based on which scientific principle?
  • A. Faradays laws of electromagnetic induction
  • B. Laws of thermodynamics
  • C. Ampere's Law
  • D. Total internal reflection of light

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1 Verified Answer | Published on 18th 08, 2020

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Q7 Single Correct Medium
The Giant Metrewave Radio Telescope (GMRT) is related to _________________.
  • A. Superconductivity
  • B. Generation, propagation and detection of electromagnetic waves
  • C. Detection of cosmic radio waves
  • D. Trapping and cooling of atoms by laser beams and magnetic fields

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1 Verified Answer | Published on 18th 08, 2020

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Q8 Single Correct Medium
Which of the following scientific phenomenon is involved in the generation of Hydroelectric power?
  • A. Motion of charged particles in electromagnetic fields
  • B. Conversion of gravitational potential energy into electrical energy
  • C. Bernoullis principle in fluid dynamics
  • D. Trapping and cooling of atoms by laser beams and magnetic fields.

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Q9 Subjective Medium
Write about your favourite scientist/physicist.

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Q10 Single Correct Medium
Who discovered X-rays?
  • A. Michael Faraday
  • B. Albert Einstein
  • C. W.K. Roentgen
  • D. J.J. Thomson

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1 Verified Answer | Published on 18th 08, 2020

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