ICSE − Q & A

Does body always vibrate with its own natural frequency  and amplitude no matter how hard it may be struck?If yes then can any1 tell me how forced vibrations are different??? If no then can any1 elaborate on free and forced vibrations by bringing imp points of difference? Plzzz ASAP

Guy please reply to these questions ASAP:
1)How will the Centre of gravity of a symmetrical cylinder change if it is one fourth filled with 
water. Justify.
2) Mention any two differences between reflection of light from plane mirror and total internal 
reflection of light from a prism.
3)Define absolute refractive index. Can it be less than one? Explain.
4)Define one diopter.
5) Name two waves of frequency greater than of violet light. State one use of each.

If rays of res , green , violet and yellow lights are allowed to fall on a prism,  for which clout will the angle of deviation be maximum?  For which colour will it be minimum?

Guyz is gears dere in physics for the board?

Dear all , 
Can anyone answer what will be the difference in the readings of ammeter when 
1:key is open
2:key is closed
 

Given that emf is 10V and two resistors of  4 ohm and 8 ohm and key is connected to the 4 ohm in series ...
Reply asap ...

Guys the chapter "apna apna bhagya" is given abridged in the evergreen icse sahitya Sagar book. The real version contains some extremely important lines which are likely to be asked for explaination. Please tell me whether to read that version or not.
Read the full version here:
https://drive.google.com/file/d/0B_hyzJrmK74dRV83cVQ0NkptTDg/view?usp=drivesdk

What is meant by drop in electric potential or what causes it?

+ 1 more questions by san_ika  

Prism causes dispersion of white light but rectangular glass block doesnt...give reason
asked by Xyz (san_ika) 7 years ago
2

wats the answer for this:
Does the boiling point of water changes with altitude ? If so, how ?

Guys how saw your Kannada exam today. And what about the papers printing mistakes.

kannada essays any guess