Previous Year Paper year:2014 : ICSE-X-Physics

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ICSE-X-Physics

Previous Year Paper year:2014

with Solutions - page 2

#2-b-i
A loud speaker.
Ans : Electrical energy converted to sound energy.

#2-b-ii [2]
A glowing electric bulb.
Ans : Electrical energy converted to light and heat energy.

#2-c

#2-c-i
What is nuclear energy?
Ans : In nuclear fission and fusion there is a loss in mass due to loss in mass energy is released. The energy so released is called the nuclear energy.

#2-c-ii [2]
Name the process used for producing electricity using nuclear energy.
Ans : Nuclear fission.

#2-d [2]
State one important advantage and disadvantage each of using nuclear energy for
producing electricity.
Ans : Advantage: A very small amount of nuclear fuel can produce a tremendous amount of electricity energy.
Disadvantage: Very harmful nuclear radiations are produced in the process which are highly energetic and penetrating.

#2-e
Ans : (i) Dissipation of energy. (ii) More.

#2-e-i
The conversion of part of the energy into an undesirable form is called
______________.

#2-e-ii [2]
For a given height h, __________________ the length l of the inclined plane, lesser
will be the effort required.

#3

#3-a [2]
Draw the diagram given below and clearly show the path taken by the emergent
ray.

Ans :

#3-b

#3-b-i
What is consumed using different electrical appliances, for which electricity
bills are paid?
Ans : Electrical energy.

#3-b-ii [2]
Name a common device that uses electromagnets.
Ans : Electrical bell.

#3-c