Home
Class 12
PHYSICS
Assertion: An electron microscop can ach...

Assertion: An electron microscop can achieve better resolving power then an optical microscope.
Reason : The de-broglie wavelength of the electrons emitted form an electron gun with velocity `500m//s` is much less than `500nm`.

A

If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
b

Both Assertion and Reason are correct but the Reason is not correct explanation of the Assertion.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Value based question|1 Videos
  • CURRENT ELECTRICITY

    PRADEEP|Exercise Problems for Practice (B)|2 Videos
  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos

Similar Questions

Explore conceptually related problems

Given below are two statements : one is labelled as Assertion A and the other is labelled as Assertion A: An electron microscope can achieve better resolving power than an optical microscope. Reason R : The de Broglie's wavelength of the electrons emitted from an electron gun is much less than wavelength of visible light. In the light of the above statements, choose the correct answer from the options given below:

Statement-1:An electron microscope can achieve better resolving power than an optical microscope Statement-2:The de Broglie wavelength of the electrons emitted from an electron gun is much less than 500 nm

Statement-1 Resolving power of electron microscope is greater than optical microscope : Statement-2 De-broglie wavelenth of electron is very less than visible light

The resolving power of electron microscope is higher that that of an optical microscope because the wavelength of electrons is ……. Than the wavelength of visible light.

A potential difference of 15 KV is applied to accelerate the electron in an electron microscope. The de broglie wavelength of the electron waves is

Assertion(A): An electron cannot exist in the nucleus Reason(R): The deBroglie wavelength of an electron is much smaller than the diameter of the nucleus

Find the de-Broglie wavelengths of (a) a 46 g golf ball with a velocity of 30m/s (b) an electron with a velocity of 10^7 m//s.

The resolving power of an electro microscope is higher than that of an optical microscope because the wavelength of electrons is "________________" than the wavelength of visible light.

Light of wavelength 500 nm is incident on a metal with work function 2.28 eV . The de Broglie wavelength of the emitted electron is

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. The work function of Silver and sodium are 4.6 and 2.3 eV, respective...

    Text Solution

    |

  2. A 25 watt bulb, which is producing monochromatic light of wavelength 6...

    Text Solution

    |

  3. A parallel beam of monochromatic light of wavelength 600nm is incident...

    Text Solution

    |

  4. A proton is fired from very far away towards a nucleus with charge Q ...

    Text Solution

    |

  5. De-broglie wavelength associated with an electron accelerated through ...

    Text Solution

    |

  6. Find the energy that should be added to an electron of energy 2eV to r...

    Text Solution

    |

  7. Assertion: Light of frequency 1.5 times the threshold frequency is inc...

    Text Solution

    |

  8. Assertion : Photoelectric effect demonstrates the wave nature of light...

    Text Solution

    |

  9. Assertion: Photoecell is called electric eye. Reason: Photocell can ...

    Text Solution

    |

  10. Assertion: An electron microscop can achieve better resolving power th...

    Text Solution

    |

  11. Assertiom: The de-broglie wavelength of a neutrons when its kinetic en...

    Text Solution

    |

  12. Assertion: The de-broglie wavelength equation has significance for any...

    Text Solution

    |

  13. Assertion: A particle of mass M at rest decays into two particles of m...

    Text Solution

    |

  14. Statement-1: The photoelectrons produced by a monochromatic light beam...

    Text Solution

    |

  15. This question has statement - 1 and statement - 2 of the four choice g...

    Text Solution

    |

  16. Statement - 1 : When ultraviolet light is incident on a photocell , it...

    Text Solution

    |

  17. Assertion : A laser beam 0.2 W power can drill holes through a metal s...

    Text Solution

    |

  18. Statement-1: A small metal ball is suspended in a uniform electric fie...

    Text Solution

    |

  19. Statement-1: An electron of mass m when accelerated through a potentia...

    Text Solution

    |

  20. Statement-1: Davisson-Germer experiment established the wave nature of...

    Text Solution

    |