Home
Class 11
PHYSICS
An ice cream has a marked value of 700 k...

An ice cream has a marked value of 700 kcal. How may kilowatt-hour of energy will it deliver to the body as it is degested.

A

0.81 kWh

B

0.90 kWh

C

1.11 kWh

D

0.71 kWh

Text Solution

Verified by Experts

The correct Answer is:
A

1 kcal `= 10^(3)` Calorie = 4200 J `= (4200)/(3.6xx10^(6))kWh`
`therefore 700 kcal = (700xx4200)/(3.6xx10^(6))kWh = 0.81 kWh`
Promotional Banner

Topper's Solved these Questions

  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Power)|31 Videos
  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Elastic and Inelastic Collision)|68 Videos
  • WORK , ENERGY , POWER AND COLLISION

    ERRORLESS |Exercise Ordinary Thinking (Objective Questions) (Work Done by Variable Force)|26 Videos
  • WAVES AND SOUND

    ERRORLESS |Exercise SET|25 Videos
  • WORK, ENERGY, POWER & COLLISION

    ERRORLESS |Exercise Assertion|30 Videos

Similar Questions

Explore conceptually related problems

A body of mass m is situated at a distance 4R_(e) above the earth's surface, where R_(e) is the radius of earth. How much minimum energy be given to the body so that may escape

A refrigerator placed in a room at 300K has inside temperature 200K. How many caslories of heat shall be delivered to the room for each 2 KiloCal of energy consumed by the refrigerator ideally?

An element has an atomic number 12. How may electrons will be present in the K, L and M energy shells of its atom ?

A body lying on the surface of planet Venus has gravitational potential energy equal to -7.5 xx 10^(6) J . How much energy will be required for the body to escape from the planet ?

A3 H inductor is placed in series with 10 Omega resistor and an emf of 10V is applied to the combination. Find (i) the current at 0.3s, (ii) the rate of increase of current at 0.3s, (iii) the rate at which energy is dissipated as heat at t = 0.3s . (iv) the rate at which energy is stored in the magnetic field at 0.3s. (v) the rate at which energy is delivered by the battery, and (vi) the energy stored when the current has attained steady value.

An electric bulb is marked 250 W - 200 V . What information does it convey ? How many Joules of energy is consumed by this bulb in one hour ? How long will it take for the bulb to consume 1 kWh ?

ERRORLESS -WORK , ENERGY , POWER AND COLLISION-Ordinary Thinking (Objective Questions) (Conservation of Energy and Momentum)
  1. A ball is released from certain height. It loses 50% of its kinetic en...

    Text Solution

    |

  2. A 0.5 kg ball is thrown up with an initial speed 14 m/s and reaches a ...

    Text Solution

    |

  3. An ice cream has a marked value of 700 kcal. How may kilowatt-hour of ...

    Text Solution

    |

  4. What is the velocity of the bob of a simple pendulum at its mean posit...

    Text Solution

    |

  5. A particle of mass 'm' and charge 'q' is accelerated through a potenti...

    Text Solution

    |

  6. A man who is running has half the kinetic energy of a boy of half his ...

    Text Solution

    |

  7. The mass of two substance are 4 gm and 9 gm respectively. If their kin...

    Text Solution

    |

  8. If the momentum of a body is increased by 100%, then the percentage in...

    Text Solution

    |

  9. If a body looses half of its velocity on penetrating 3 cm in a wooden ...

    Text Solution

    |

  10. A bomb of mass 9 kg explodes into 2 pieces of mass 3 kg and 6 kg. The ...

    Text Solution

    |

  11. Two masses of 4kg and 16kg are moving with equal K.E. The ratio of mag...

    Text Solution

    |

  12. A machine which is 75 percent efficient, uses 12 joules of energy in l...

    Text Solution

    |

  13. Two bodies moving towards each other collide and move away in opposite...

    Text Solution

    |

  14. A block of mass m at rest is acted upon by a force F for a time t. The...

    Text Solution

    |

  15. The potential energy of a weight less spring compressed by a distance ...

    Text Solution

    |

  16. Two identical blocks A and B , each of mass m resting on smooth floor ...

    Text Solution

    |

  17. Two bodies of masses m and 4 m are moving with equal K.E. The ratio of...

    Text Solution

    |

  18. A stationary partical explodes into two partical of a masses m(1) and ...

    Text Solution

    |

  19. The kinetic energy of a body of mass 3 kg and momentum 2 Ns is

    Text Solution

    |

  20. A bomb of mass 3.0Kg explodes in air into two pieces of masses 2.0 kg ...

    Text Solution

    |