ICSE − Q & A

http://www.respaper.com/icse/255/340/4666-pdf.html question 3 (B) plz tell the  procedure guys

guys which light ray diagram can come this time ?

Can anyone please upload pg 238 of concise(2017 edition)ASAP?It's a request and yes please upload the full page.
TY in advance.

Is it me or anyone else who feels that tomorrow's paper will be easy as hell....???

http://www.respaper.com/icse/255/340/4666-pdf.html Is the answer of q(3.b) 10 C??

what is the effect on the beam particles if 
(i) a hotter filament is used 
(ii) the anode voltage is increased

Question is in the comment section

An electrical appliance is rated 1000 KVA, 220V. If it used for 2 hours, calculate the amount of energy consumed by it in :
1) KWh 2) joule

Can anyone pls show me the working of this question-A piece of ice of mass 40g is added to 200g of water at 50C.Calculate the final temperature of water when all the ice has melted.

An external resistance R is connected to a cell of internal resistance R.The current in the circuit is maximum when:
(a)R<r  (b)R>r  (c)R=r  (d)R=2r
Give reason.