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July 7th, 2014, 08:31 AM
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Join Date: Mar 2012
ICSE Board Previous year paper

I need the ICSE Board Previous year paper of physics, will you please provide me the same????

As you need the ICSE Board Previous year paper of physics, here I am sharing the same:

(a) (i) Draw a displacement-distance graph for two waves A and B such that
the amplitude of wave A is three times that of wave B.
(ii) Give one example of forced vibration.
(iii) State two necessary conditions for hearing a distinct echo. [3]
(b) John fires a gun towards a hill and hears its echo after 5 seconds. He then
moves 320 m towards the hill and fires his gun again. This time he hears the
echo after 3 seconds. Calculate the velocity of sound.

a) (i) Define work function of a metal.
(ii) State two factors on which the rate of emission of thermions depend. [3]
(b) (i) Define Radioactivity.
(ii) A radioactive substance is oxidized. What change would you expect to
take place in the nature of its radioactivity? Give a suitable reason. [3]
(c) ‘Radioactive materials as an alternative source of energy must be used
wisely’. Give reasons to justify this statement.







Last edited by Neelurk; April 14th, 2020 at 09:18 AM.
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