Home
Class 12
PHYSICS
The twinkling effect of star light is du...

The twinkling effect of star light is due to

A

total internal reflection

B

high dense matter of star

C

constant burning of hydrogen in the star

D

the fluctating apparent position of the star being slightly different from the actual position of the star.

Text Solution

Verified by Experts

The correct Answer is:
C
When energy is produced by fusion and fission, the vapours fluctuate and move towards less dense places outwards. Convection causes twinkling.
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2005

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|59 Videos

  • KARNATAKA CET 2007

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

What causes twinkling of stars ?

The bending of a light ray due to change in velocity of light as the medium changes is called :

The toxic effect of CO is due to its greater affinity for haemoglobin as compared to O_2 approximately by

The inhibitory effect of the vagus nerve on the heart is due to the secretion of

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2006-PHYSICS
  1. The twinkling effect of star light is due to

    Text Solution

    |

  2. The width of the diffraction band varies

    Text Solution

    |

  3. An unploarised beam of intensity I(0) is incident on a pair of nicols ...

    Text Solution

    |

  4. Look at the graphs (a) to (d) carefully and indicate which of these po...

    Text Solution

    |

  5. A cyclist starts from the centre O of a circular park of radius one ki...

    Text Solution

    |

  6. What a low flying aircraft passes over head, we sometimes notice a sli...

    Text Solution

    |

  7. A beam of light of wavelength 600 nm from a distant source falls on a ...

    Text Solution

    |

  8. The physical quantity having the dimensions [M^(-1)L^(-3)T^(3)A^(2)] i...

    Text Solution

    |

  9. A battery of emf 10 V and internal resistance 3 ohm is connected to a ...

    Text Solution

    |

  10. A galvanometer coil has a resistance of 15 ohm and gives full scale de...

    Text Solution

    |

  11. The electron drift speed is small and the charge of the electron is al...

    Text Solution

    |

  12. A straight wire of mass 200 g and length 1.5 m carries a current of 2 ...

    Text Solution

    |

  13. If the circuit shown the value of I in ampere is

    Text Solution

    |

  14. A gaussian sphere encloses an electric dipole within it. The total flu...

    Text Solution

    |

  15. A parallel plate air capacitor has a capacitance C. When it is half fi...

    Text Solution

    |

  16. A comb run through one's dry hair attracts small bits of paper. This i...

    Text Solution

    |

  17. The top of the atomosphere is about 400 kV with respect to the surface...

    Text Solution

    |

  18. The specific charge of a proton is 9.6xx10^(7)C//kg. The specific char...

    Text Solution

    |

  19. When light of wavelength 300 nm falls on a photoelectric emitter, phot...

    Text Solution

    |

  20. White light is passed through a dilute solution of potassium permangan...

    Text Solution

    |