English

Name the energy transfers which occur when a torch is on.

Advertisements
Advertisements

Questions

Name the energy transfers which occur when a torch is on.

Name the energy conversion that takes place when a torch is on.

Very Short Answer
Advertisements

Solution

A torch converts the electrical energy of the battery into light and heat energy.

shaalaa.com
  Is there an error in this question or solution?
Chapter 2: Work, Power and Energy - EXERCISE [Page 49]

APPEARS IN

Lakhmir Singh Physics [English] Class 10 ICSE
Chapter 2 Work, Power and Energy
EXERCISE | Q 2. (iv) | Page 49
Lakhmir Singh Physics Part 1 [English] Class 9
Chapter 4 Work and energy
Very Short Answers 2 | Q 50.4 | Page 165

RELATED QUESTIONS

Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?


In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.


State whether the object possess kinetic energy, potential energy, or both :
A man climbing a hill _____________.


State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.


A boy weighing 40 kg makes a high jump of 1.5 m.
What is his kinetic energy at the highest point?


A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)


Give two examples where a body possesses both, kinetic energy as well as potential energy.


What are the various forms of energy?


Name the device or machine which convert :
Chemical energy into electrical energy.


Name the device or machine which convert :
Electrical energy into heat energy.


Name the device or machine which convert :
Heat energy into kinetic energy (or mechanical energy).


Name the device or machine which convert :
light energy into heat energy.


Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.


Five electric fans of 120 watts each are used for 4 hours. Calculate the electrical energy consumed in kilowatt-hours.


A bulb lights up when connected to a battery. State the energy change which takes place :


When an object falls freely towards the earth, then its total energy :


Which of the following energy change involves frictional force?


In the case of negative work, the angle between the force and displacement is


A girl with having a mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of 4 m s–1 by applying a force. The trolley comes to rest after traversing a distance of 16 m. (a) How much work is done on the trolley? (b) How much work is done by the girl?


A body of mass 10 kg falls from a height of 20 m to 8 m. Calculate:

  1. the loss in potential energy of the body, and
  2. the total energy possessed by the body at any instant? (Take g = 10 m s-2)

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×