Home
Class 7
PHYSICS
(a) What is spectrum ? What is the name ...

(a) What is spectrum ? What is the name of glass shape used to produce a spectrum ?
(b) How many colours are there in a full spectrum of white light ? Write the various colours of spectrum in the order, starting with red.

Promotional Banner

Topper's Solved these Questions

  • HEAT

    LAKHMIR SINGH & MANJIT KAUR|Exercise EXERCISE|101 Videos

  • MOTION AND TIME

    LAKHMIR SINGH & MANJIT KAUR|Exercise EXERCISE|108 Videos

Similar Questions

Explore conceptually related problems

What is a spectrum of light ?

In the spectrum of white light through the prism, which colour is seen at the top and why ?

What is spectrum? Draw a labelled diagram to show the formation of spectrum. Name the various colours of spectrum.

How many colours does white light consist of and what are they?

How could you show that the colours of the spectrum combine to give white light ?

What colours lie on the two sides of the 'green colour' in the spectrum of white light ?

LAKHMIR SINGH & MANJIT KAUR-LIGHT-EXERCISEE
  1. Where must the object be placed for the image formed by a converging l...

    Text Solution

    |

  2. What happens when a beam of sunlight is passed through a glass prism ?...

    Text Solution

    |

  3. (a) What is spectrum ? What is the name of glass shape used to produce...

    Text Solution

    |

  4. What colours make up white light ?

    Text Solution

    |

  5. What is a lens ? Name the two types of lenses. Name any five things wh...

    Text Solution

    |

  6. What kind of lens is used as a magnifying glass ?

    Text Solution

    |

  7. Which type of reflector is used in car headlights for producing a para...

    Text Solution

    |

  8. Name a natural phenomenon which is caused by the dispersion of sunligh...

    Text Solution

    |

  9. Why does a parting in our hair on the left appear to be a parting on t...

    Text Solution

    |

  10. What information do we get about sunlight from the formation of a rain...

    Text Solution

    |

  11. In what way is the word AMBULANCE painted in front of the hospital van...

    Text Solution

    |

  12. What is a real image ? Give one example of real image.

    Text Solution

    |

  13. What is a virtual image ? Give one example of virtual image.

    Text Solution

    |

  14. You see your image in a plane mirror. State two characteristics of the...

    Text Solution

    |

  15. State three characteristics of the image of an object formed by a conc...

    Text Solution

    |

  16. Explain how, we are able to see the table lying in a room though it do...

    Text Solution

    |

  17. State three characteristics of the image formed by a convex mirror of ...

    Text Solution

    |

  18. Name the type of mirror used by dentists. How does it help ?

    Text Solution

    |

  19. How many colours are present in a rainbow ? Name them.

    Text Solution

    |

  20. A vitual image larger than the object can be produced by

    Text Solution

    |