Home
Class 12
PHYSICS
Consider the following statements A and ...

Consider the following statements A and B, identify the correct choice in the given answers
A. Lines spectra is due to atoms in gaseous state.
B. Band spectra is due to molecules.

A

Both A and B are false

B

A is true and B is false

C

A is false and B is true

D

Both A and B are true

Text Solution

Verified by Experts

The correct Answer is:
D

Line spectrum is produced by an excited source in atomic state while band spectrum is generated by an excited source in molecular state.
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER

    SIA PUBLICATION|Exercise PHYSICS|14 Videos
  • SAMPLE PAPER 2017

    SIA PUBLICATION|Exercise PHYSICS|8 Videos

Similar Questions

Explore conceptually related problems

Consider the following statements. A, B and identify the correct choice in the given answers (A) Density of a nucleus is independent of its mass number (B) Beryllium is used as moderator in nuclear reactors

Consider the following statements A and B. Identify the correct choice in the given answer A. The refractive index of the extraordinary ray depends on the angle of incidence in the double refraction. B. The vibration of light waves acquire one sided ness of both ordinary and extraordinary rays in double refraction.

Consider the following statements A and B. Identify the correct choice in the given answers A) In a one-dimensional perfectly elastic collision between two moving bodies of equal masses, the bodies exchange theirvelocities after the collision. . B) If a lighter body at rest suffers head - on and perfectly elastic collision with a very heavy body moving with a certain velocity, after the collision both travel with same velocity

Consider the following two statements A and B and identify the correct choice in the given answers A. Paramagnetism is explained by domain theory. B. Susceptibility of a diamagnetic substance is independent of temperature.

Consider the following statements A and B and indetify the corrent choice in the given answers. A Thigtly bound electrons of target material scatter X-rays photon ,resulting in the Compton effect. B Photoelectric effect takes place in free electrons

Consider the following statements A and B and identify the correct choice in the given answers . (A) Suceptibility of paramagnetic material does not depend upon temperature (B) Ferromagnetism is explained by domain theory

SIA PUBLICATION-RAY OPTICS-M.C.Q
  1. In the visible region the dispersive powers and the mean angular devia...

    Text Solution

    |

  2. Under minimum deviation condition in a prism, if a ray is incident at ...

    Text Solution

    |

  3. Consider the following statements A and B, identify the correct choice...

    Text Solution

    |

  4. In a compound microscope cross wires are fixed at the point

    Text Solution

    |

  5. The focal length of the lenses of an astronomical telescope are 50 cm ...

    Text Solution

    |

  6. The final image in an astronomical telescope is

    Text Solution

    |

  7. The least distance of distinct vision is 25 cm. If the focal length of...

    Text Solution

    |

  8. In a Huygen’s eye-piece, with an eye-piece of focal length F, the dist...

    Text Solution

    |

  9. In a spectrometer experiment three prisms A, B and C with same angle o...

    Text Solution

    |

  10. An object is placed 40 cm in front of a convex mirror of radius of cur...

    Text Solution

    |

  11. A compound microscope has an objective of focal length 4 mm and an eye...

    Text Solution

    |

  12. In the achromatic prism, we have

    Text Solution

    |

  13. Fraunhofer lines are due to

    Text Solution

    |

  14. Which of the following statements is not true in the case of Huygen’s ...

    Text Solution

    |

  15. The dark lines in the solar spectrum are due to

    Text Solution

    |

  16. An incandescent filament emits a spectrum which is a

    Text Solution

    |

  17. Reflection of a light wave at a fixed point results in a phase differe...

    Text Solution

    |

  18. In a Huygen's eye-piece the eye lens has a focal length of f, the equi...

    Text Solution

    |

  19. An astronomical telescope has a length of 310 cm and a magnifying powe...

    Text Solution

    |

  20. If hati denotes a unit vector along incident light ray, hati a unit ve...

    Text Solution

    |