ICSE − Q & A

Guys please explain me in briefly
What is optical fibre?
On what principle does it work?
Please help me ...

Is everyone refering to concise only or any other book? (asking so that it doesnt happen like geography paper)

Concise phy 12 B 11 pla explain

+ 1 more questions by san_ika  

In cathode ray tube....why is the deflction caused by magnetic field larger than same length of electric field of same strength??
asked by Xyz (san_ika) 7 years ago
1

please guys I need another favour from you.I have not understood the concept in the question
http://www.respaper.com/sanchit01/5557-pdf.html
Q8 a
Its a humble request

+ 1 more questions by asysu  

name the radiation for which greenhouse gas is a)transparent b)opaque Please guys help me out
asked by Ayush Mishra (asysu) 7 years ago
2

http://www.respaper.com/harshavvardhan/774/6557-zip.html Q4(d)

is electric bell in scope????

Please answer the following :
1200g of molten lead at its melting point 325 degrees Celsius, is dropped into 600g of water at 10 degrees Celsius. Calculate the final temperature of the mixture. (Specific heat capacity of lead=0.15,water=4.2,and specific latent heat of fusion of lead=30 joule per gram)

why is soft iron used to make the armature of electric bell?

CONCISE TB EX(1B) 14 th question how do u answer this?

WHATS A DOUBLE POLE SWITCH?