Home
Class 11
PHYSICS
An object is being heated by a heater su...

An object is being heated by a heater supplying 60 W heat. Temperature of surrounding is `20^(0)C` and the temperature of object becomes constant at `50^(0)C`. Now the heater is switched off. The rate at which the object will lose heat when its temperature has dropped to `30^(0)C` is `4xxz` watt. Then z is equal to ......................

Text Solution

Verified by Experts

The correct Answer is:
5
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-I (MAIN)) Straight Objective Type Questions|19 Videos

  • TRANSMISSION OF HEAT

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II (LECTURE SHEET (ADVANCED)) Straight Objective Type Questions|6 Videos

  • TRANSMISSION OF HEAT

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE-II) Thermal Conduction (LEVEL-II) Linked Comprehension Type Questions (Passage-I)|2 Videos

  • TRANSMISSION OF HEAT

    AAKASH SERIES|Exercise QUESTION FOR DESCRIPTIVE ANSWER|4 Videos

  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise Practice Exercise|45 Videos

Similar Questions

Explore conceptually related problems

A system absorbs 10kJ of heat at constant volume and its temperature rises from 27^(0)C " to " 37^(0)C . The DE of reaction is

The resistance of a bulb filament is 100Omega at a temperature of 100^(0)C . If its temperature coefficient of resistance be 0.005 per ""^(0)C , its resistance will become 200Omega at a temperature of

A liquid of mass 250 g is kept warm in a vessel using an electric heater. The liquid is maintained at 57^(@) when the power supplied by the heater is 30 W and surrounding temperature is 27^(@) C . As the heater is switched off, it took 10 s time for the temperature of the liquid to fall from 47^(@) C to 46.9^(@) C . The specific heat capacity of the liquid is

A 210 W heater is used to heat 100 g water. The time required to raise the temperature of this water from 25^(@)C to 100^(@)C is (specific heat capacity of water =4200" J/Kg-"^(@)C )