Class 10 ICSE Physics Work Power & Energy Boards Questions
Here we provide Class 10 physics important notes,board questions and predicted questions with Answers for chapter Work Power & Energy. These important notes,board questions and predicted questions are based on ICSE board curriculum and correspond to the most recent Class 10 physics syllabus. By practising these Class 10 materials, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 10 Board examinations.
2020
Q1
A crane 'A' lift a heavy load in 5 seconds whereas another crane 'B' does the same work in 2 seconds
compare the power of crane 'A' to that of crane 'B'.
solutions
solutions
Q2
Define a kilowatt hour. How is it related to Joule ?
solutions
solutions
Q3
A satellite revolves around a planet in a circular orbit what is the work done by the satellite at
any instant ? Give reason
solutions
solutions
Q4
Give one example of each when :
(i) Chemical energy changes into electrical energy
(ii) Electrical energy changes into sound energy.
solutions
(i) Chemical energy changes into electrical energy
(ii) Electrical energy changes into sound energy.
solutions
Q5
A body of mass 10 kg is kept at a height of 5 m, it is allowed to fall and reach the ground.
(i) What is the total mechanical energy possessed by the body at a height of 2 m assuming it is a frictionless medium ?
(ii) What is the kinetic energy possessed by the body just before hitting the ground ( g = 10 m/s2)
solutions
(i) What is the total mechanical energy possessed by the body at a height of 2 m assuming it is a frictionless medium ?
(ii) What is the kinetic energy possessed by the body just before hitting the ground ( g = 10 m/s2)
solutions
2018
Q6
(i) State and defined SI unit of power
(ii) How is the unit horsepower related to the SI unit of power
solutions
(ii) How is the unit horsepower related to the SI unit of power
solutions
Q7
State the energy change in the following cases while in use :
(i) An electric iron
(ii) A ceiling fan
solutions
(i) An electric iron
(ii) A ceiling fan
solutions
Q8
(i) What is the motion of a body moving with a constant speed around circular path said to be
accelerated ?
(ii) Name the unit of physical quantity obtained by the formula 2K/V2( Where K = kinetic energy , V : Linear velocity)
solutions
(ii) Name the unit of physical quantity obtained by the formula 2K/V2( Where K = kinetic energy , V : Linear velocity)
solutions
Q9
(i) Derive a relation between SI and CGS unit of work
(ii) A force act on a body and displaces it by a distance s in a direction at an angle θ with the direction of force. What should be the value of θ to get the maximum positive work
solutions
(ii) A force act on a body and displaces it by a distance s in a direction at an angle θ with the direction of force. What should be the value of θ to get the maximum positive work
solutions
2017
Q10
If the power of a motor be 100 kW at what speed can it raise a load of 50,000 N
solutions
solutions
2016
Q11
A boy weighing 40 gf climbs up a stairs of 30 step each 20 cm high in 4 minutes and a girl weighing
30 gf does the same in 3 minutes. Compare
(i) the work done by them
(ii) the power developed by them
solutions
(i) the work done by them
(ii) the power developed by them
solutions
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