Home
Class 11
PHYSICS
Two identical objects A and B (emissivit...

Two identical objects A and B (emissivity `e_(A)` and `e_(B),e_(A)ne e_(B)`) are planced in an enclosure, Temperature of body A, B and enclosure are same and constant.

A

Heat emitted by body A is not equal to heat emitted by body B

B

Heat absorbed by body A is not equal to heat absorbed by body B

C

If `e_(A)gte_(B)`, body A absorbs more heat than body B

D

If `e_(A)lte_(B)`, body A emits less heat than body B

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    DC PANDEY|Exercise Only One Option is Correct|27 Videos

  • ELASTICITY

    DC PANDEY|Exercise Medical entrances s gallery|21 Videos

Similar Questions

Explore conceptually related problems

Three bodies A , B and C have equal surface area and thermal emissivities in the ratio e_(A) : e_(B) : e_(C) = 1 : (1)/(2): (1)/(4) . All the three bodies are radiating at same rate. Their wavelengths corresponding to maximum intensity are alpha_(A), alpha_(B) and alpha_(C) respectively and their temperatures are T_(A) , T_(B) and T_(C) on kelvin scale , then select the incorrect statement

Two reactions A rarr products and B rarr products have rate constants k_(a) and k_(b) respectively at temperature T and activation energies are E_(a) and E_(b) respectively. If k_(a) gt k_(b) and E_(a) lt E_(b) and assuming the freuency factor A in both the reactions are same then

Two spherical black bodies A and B,having radii r_(A) and r_(B) =2r_(A) emit radiation with peak intensities at wavelength 400 nm and 800 nm respectively. If their temperature are T_(A) and T_(B) respectively in Kelvin scale, their emissive powers are E_(A) and E_(B) then :

Two electric lamps A and B radiate the same power. Their filaments have the same diemensions, and have emissivities. e_(A) and e_(B) . Their surface tempratures are T_(A) an T_(B) . The ratio T_(A)//T_(B) will be equal to

Two rigid bodies A and B rotate with rotational kinetic energies E_(A) and E_(B) respectively. The moments of inertia of A and B about the axis of rotation are I_(A) and I_(B) respectively. If I_(A) = I_(B)//4 and E_(A)= 100 E_(B), the ratio of angular momentum (L_(A)) of A to the angular momentum (L_(B)) of B is

Two electrons in two hydrogen - like atoms A and B have their total energies E_(A) and E_(B) in the ratio E_(A):E_(B)= 1 : 2 . Their potential energies U_(A) and U_(B) are in the ratio U_(A): U_(B)= 1 : 2 . If lambda_(A) and lambda_(B) are their de-Broglie wavelengths, then lambda_(A) : lambda_(B) is

DC PANDEY-CURRENT ELECTRICITY-All Questions
  1. Two identical objects A and B (emissivity e(A) and e(B),e(A)ne e(B)) a...

    Text Solution

    |

  2. The current density in a wire is 10A//cm^(2) and the electric field in...

    Text Solution

    |

  3. A resistor of resistance R is connected to a cell internal resistance ...

    Text Solution

    |

  4. Find the current through the 10(Omega)resistor shown in figure.

    Text Solution

    |

  5. Each resistance shown in the network is in ohm. Current through the re...

    Text Solution

    |

  6. The forward biased conection is :

    Text Solution

    |

  7. Four identical bulbs each rated 100 watt, 220 volts are connected acro...

    Text Solution

    |

  8. The reading of voltmeter is

    Text Solution

    |

  9. The ammeter shown in figure consists of a 480 Omega coil connected in ...

    Text Solution

    |

  10. When a galvanometer is shunted with a 4 Omega resistance, the deflecti...

    Text Solution

    |

  11. In the figure shown the current flowing 2 R is:

    Text Solution

    |

  12. The equivalent resistance between the points A and B is:

    Text Solution

    |

  13. In the circuit shown, what is the potential different V(PQ) ?

    Text Solution

    |

  14. Which of the following wiring diagrams could be used to experimentally...

    Text Solution

    |

  15. In the given circuit current flowing through the resistance 20Omega is...

    Text Solution

    |

  16. Power generated across a uniform wire connected across a supply is H. ...

    Text Solution

    |

  17. Rate of dissipation of Joule's heat in resistance per unit volume is (...

    Text Solution

    |

  18. The variation of current (I) and voltage (V) is as shown in figure A. ...

    Text Solution

    |

  19. Six resistors each of 10 ohm are connected shown. The equivalent resis...

    Text Solution

    |

  20. Thirteen resistances each of resistance R ohm are connected in the cir...

    Text Solution

    |

  21. In the given network, the euqivalent resistance between A and B is

    Text Solution

    |