Home
Class 12
PHYSICS
A laser beam is used for carrying our su...

A laser beam is used for carrying our surgery because it

A

is highly monochromatic

B

is highly coherent

C

can be sharply focussed

D

is highly directional

Text Solution

Verified by Experts

The correct Answer is:
C
( c) LASER is the short form of Light Amplification Stimulated Emission of Radiation. It is a device by which an intense, monochromatic, collimated and highly coherent light beam can be obtained. Laser beam is used in surgery because it can be sharply focussed.
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    A2Z|Exercise Assertion- Reason|10 Videos

  • NUCLEAR PHYSICS

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • NUCLEAR PHYSICS

    A2Z|Exercise AIPMT/NEET Questions|52 Videos

  • MOCK TEST

    A2Z|Exercise Mock Test 3|44 Videos

  • SEMICONDUCTOR ELECTRONICS

    A2Z|Exercise EXERCISE|29 Videos
A2Z-NUCLEAR PHYSICS-AIIMS Questions
  1. When radioactive substance emits an alpha-particle, then its position ...

    Text Solution

    |

  2. In an atom bomb, the energy is released because of the.

    Text Solution

    |

  3. The flux of alpha-particle at 2^@ is 1 xx 10^6. The flux of alpha-part...

    Text Solution

    |

  4. A laser beam is used for carrying our surgery because it

    Text Solution

    |

  5. If a radioactive substance reduces to (1)/(16) of its original mass in...

    Text Solution

    |

  6. The dependence of binding energy per nucleon, BN on the mass number, A...

    Text Solution

    |

  7. A radioactive nucleus undergoes alpha-emission to form a stable elemen...

    Text Solution

    |

  8. When and electron-positron pair annihilates, the energy released is ab...

    Text Solution

    |

  9. A radioactive material has half-life of 10 days. What fraction of the ...

    Text Solution

    |

  10. The operation of a nuclear reactor is said to be critical, if the mult...

    Text Solution

    |

  11. .(92)^(238)U has 92 protons and 238 nucleons. It decays by emitting an...

    Text Solution

    |

  12. The fossil bone has a .^(14)C : .^(12)C ratio, which is [(1)/(16)] of ...

    Text Solution

    |

  13. Which one of the following is a possible nuclear reaction ?

    Text Solution

    |

  14. Starting with a sample of pure .^66 Cu, 7//8 of it decays into Zn in 1...

    Text Solution

    |

  15. A radioactive material decays by simulataneous emission of two particl...

    Text Solution

    |

  16. 200 MeV of energy may be obtained per fission of U^235. A reactor is g...

    Text Solution

    |

  17. In the reaction .1^2 H + .1^3 H rarr .2^4 He + .0^1 n, if the binding ...

    Text Solution

    |

  18. In a radioactive substance at t = 0, the number of atoms is 8 xx 10^4....

    Text Solution

    |

  19. Highly energetic electrons are bombarded on a target of an element con...

    Text Solution

    |

  20. Two radioactive X(1) and X(2) have decay constants 10 lambda and lamb...

    Text Solution

    |