Home
Class 11
PHYSICS
The calories of heat developed in 200 W ...

The calories of heat developed in 200 W heater in 7 min is estimated

A

15000

B

100

C

1000

D

20000

Text Solution

Verified by Experts

The correct Answer is:
D

`H = (200 xx 7 xx 60)/(4.18)cal = 20095.7 ~~20000 cal`
Promotional Banner

Topper's Solved these Questions

  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Assertion and reason|17 Videos
  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Match the columns|4 Videos
  • CALORIMETRY AND HEAT TRANSFER

    DC PANDEY|Exercise Check points 16.4|25 Videos
  • CALORIMETRY & HEAT TRANSFER

    DC PANDEY|Exercise Level 2 Subjective|14 Videos
  • CENTRE OF MASS

    DC PANDEY|Exercise Medical entrances gallery|27 Videos

Similar Questions

Explore conceptually related problems

The heat produced by 100W heater in 2 minutes is equal to

How many calories of heat will be approximately developed in a 210 W electric bulb in 5 min ?

Two bulbs of 500 watt and 200 watt are manufactured to operate on 220 volt line. The ratio of heat produced in 500 W and 200 W , in two cases, when firstly they are joined in parallel and secondly in series, will be

If a given volume of water in a 220 V heater is boiled in 5 min , then how much time will it take for the same volume of water in a 110 V heater to be boiled?

In the circuit shown in figure, the 5 Omega resistance develops 20.00 cal//s due to the current flowing through it. The heat developed in 2 Omega resistance (in cal //s ) is

A heater coil working on mains produces 100 cal of heat in a certain time. Now, the heater coil is cut into three equal parts and one part is only used for heating. The quantity of heat produced (in calories) in the same time is

The SI unit of heat is 'calorie'.

DC PANDEY-CALORIMETRY AND HEAT TRANSFER-Taking it together
  1. The temperature of a body in increased from 27^(@)C to 127^(@)C. By wh...

    Text Solution

    |

  2. The calories of heat developed in 200 W heater in 7 min is estimated

    Text Solution

    |

  3. The thickness of a metallic plate is 0.4 cm. The temperature between i...

    Text Solution

    |

  4. A spherical black body with radius 12 cm radiates 640 w power at 500 K...

    Text Solution

    |

  5. Rate of heat flow through a cylindrical rod is H(1). Temperatures of e...

    Text Solution

    |

  6. A sphere, a cube and a thin circular plate are heated to the same temp...

    Text Solution

    |

  7. Certain amount of heat is given to 100 g of copper to increase its tem...

    Text Solution

    |

  8. 2gm of steam condenses when passed through 40 gm of water initially at...

    Text Solution

    |

  9. Two identical square rods of metal are welded end to end as shown in f...

    Text Solution

    |

  10. Three rods of same dimensions have thermal condutivity 3K,2K and K The...

    Text Solution

    |

  11. A wall has two layers A and B each made of different materials. The la...

    Text Solution

    |

  12. A body cools from 50^(@)C to 40^(@)C in 5 min. The surroundings temper...

    Text Solution

    |

  13. A block of ice at -10^@C is slowly heated and converted to steam at 10...

    Text Solution

    |

  14. If one kilogram water at 100^(@)C is vapourised in open atmosphere. Th...

    Text Solution

    |

  15. A liquid cools from 50^(@)C to 45^(@)C in 5 minutes and from 45^(@)C ...

    Text Solution

    |

  16. The spectrum of a black body at two temperatures 27^(@)C and 327^(@)C ...

    Text Solution

    |

  17. The graph, shown in the adjacent diagram, represents the variation of ...

    Text Solution

    |

  18. Two substances A and B of equal mass m are heated by uniform rate of 6...

    Text Solution

    |

  19. Sunrays are allowed to fall on a lens of diameter 20 cm. They are then...

    Text Solution

    |

  20. If a body coated black at 600K surrounded by atmosphere at 300 K has c...

    Text Solution

    |