Home
Class 11
PHYSICS
A piece of iron is heated in a flame . I...

A piece of iron is heated in a flame . It first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using.

A

Stefan’s Law

B

Wien’s displacement Law

C

Kirchoff’s Law

D

Newton’s Law of cooling

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • BEHAVIOUR OF PERFECT GAS AND KINETIC THEORY

    SARAS PUBLICATION|Exercise EXAMPLE|24 Videos

  • GRAVITATION

    SARAS PUBLICATION|Exercise EXAMPLE|34 Videos

Similar Questions

Explore conceptually related problems

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. How do emergent rays appear ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. Write the colours of the Spectrum ?

Read the passage and answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. What is dispersion ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. What is spectrum ?

Read the passage and Answer the following question: In, vacuum the velocity of light radiation with different wavelength is the same. But in a material medium, the velocity of different colour radiations is not the same and they travel with different paths. Due to this, the refractive index of the medium is different for different colours. If white beam of light is incident on a glass prism, the angle of refraction for different colours is different. When Sunlight is incident on a refracting surface, then it gets split into seven coloured spectrum and emerges out. The splitting of light into its component colours is called dispersion. Sir Isaac Newton was the first to use a glass prism to obtain the spectrum of Sunlight. A glass prism is transparent medium bounded by two plane surfaces inclined at an angle. When white light is dispersed into seven colours by a prism, different colours of light bend through different angles with respect to incident ray. Out of these seven colours, red light bends the least, while violet light bends the most. So, the rays of each colour emerge along different paths and becomes distinct. Hence, we get spectrum of seven - different colours. Q. Which light deviates the least and which one deviates the most ?

SARAS PUBLICATION-BULK MATTER -EXAMPLE
  1. The following four wires are made of the same material. Which of these...

    Text Solution

    |

  2. The wettability of a surface by a liquid depends primarily on

    Text Solution

    |

  3. A piece of iron is heated in a flame . It first becomes dull red then ...

    Text Solution

    |

  4. The amount of heat energy required to raise the temperature of 1g of h...

    Text Solution

    |

  5. A black hole is an object whose gravitational field is so strong that ...

    Text Solution

    |

  6. Steam at 100^@ C is passed.into 20 g of water at10^@C Whenwater acquir...

    Text Solution

    |

  7. Certain quantity of water,cools from 70^@C to 60^@C in the first 5 min...

    Text Solution

    |

  8. One mole of an ideal diatomice gas undergoes a transition from AtoB al...

    Text Solution

    |

  9. The ratio of the specific heats (Cp)/(Cv)=gamma in terms of degrees o...

    Text Solution

    |

  10. Figures below shows two paths that may be taken by a gas to go from a ...

    Text Solution

    |

  11. The two ends of metal rod are maintained at temperatures 100^@C and 11...

    Text Solution

    |

  12. The young's modulus of steel is twice that of brass . Two wires of sam...

    Text Solution

    |

  13. Light of wavelength 500 nm is incident on a metal with work function 2...

    Text Solution

    |

  14. If dimensions of critical velocity of a liquid vc flowing through a tu...

    Text Solution

    |

  15. A bullet of mass 10g moving horizontally with a velocity of 400 ms^-1s...

    Text Solution

    |

  16. A rectangular film of liquid is extended from (4cmxx2cm)to(5cmxx4cm).I...

    Text Solution

    |

  17. Three liquids of densities rho1rho2and rho3(with rho1>rho2>rho3), hav...

    Text Solution

    |

  18. Two identical bodies are made of a material for which the heat capacit...

    Text Solution

    |

  19. Coefficient of linear expansion of brass and steel rods are s...

    Text Solution

    |

  20. A piece of ice falls from a height h so that it melts completely .Only...

    Text Solution

    |