ICSE − Q & A

Possible question-
Is there any change in the image produced when half of a convex lens is covered with black paper? If so, what are the changes?

Why does the sun appear larger during the evening time?

what happens to the energy supplied during change of state?

why can't d.c  electricity be used for transformers?

+ 3 more questions by qwerty6699  

Energy conversion in a thermocouple? Light to electrical or heat to electrical??
asked by Qwerty (qwerty6699) 7 years ago
1

how is the loudness affected if the amplitude is halved?
asked by Qwerty (qwerty6699) 7 years ago
5

A block weighing 20kgf is pulled up a slope at a constant speed by a constant force of 150 N.(g=10m/s2) Calculate : i) The work done by the force in moving along the slope ii)The increase in the potential energy of the body. iii)The amount of energy dissipated in pulling up the body along the slope. Show the working please
asked by Qwerty (qwerty6699) 7 years ago
1

A Important question for you all
Write two difference between concavo covex lens and convexo concave lens

Which class of lever is acting in the case of "a cycle brake".please explain

An earnest request to all those students who attempted a regional language paper ( Tamil, kannada, bengali etc) :
Can you post the essays and letters that you had received in the question paper in : English or Hindi? It will be beneficial to all Hindi students as a similar topic may come.
Thank you.

Plz see the pic and ans the ques no 8.c

http://www.respaper.com/dgenerationx/9557-pdf.html?ln=32&ov=1 Q5 a pls..

what will be the effect on working if ac is used instead of dc in an electrical bell