ICSE − Q & A

TEST MM - 10                     TIME - 1 minute                                       (just asking my doubts)
1) What effect alpha and beta particle have in mass no. and atomic no.     [2 marks]
2)Specific heat capacity of water   --   4.2 or 4186                                       [1 marks]
3) Factors on which radii of curvature depends.                                           [2 marks]
4) 2 reason for laminating core of Transformer                                            [2 marks]
5) Ratio of ionizing power of alpha, beta and gamma                                   [3 marks]

+ 1 more questions by teleansh  

https://www.respaper.com/aayush25/3848-pdf.html -- Sound Q7 Can we also write density
asked by Ansh Anand (teleansh) 5 years ago
2

What purpose is served by the terminals of three way pin plug?

A small suggestion here(You may be doing it already)

While drawing ray diagrams, try drawing the lens using protractor, and you'll get perfectly equi-convex/concave lenses. I used to draw them using compass and it was a mess.

P.S. Don't forget those tiny little arrow-heads!

+ 1 more questions by prateek235  

A few doubts here: 1. Which definition of "Refractive Index" are we supposed to write? 2. What's the principle of a machine? 3. Energy conversion in Bulb - Is it Electrical to Light OR Light & Heat? I mean, do we need to mention the degraded form of energy too?
asked by Prateek Pradhan (prateek235) 5 years ago
2

Why does the focal length of a convex lens remain unchanged even when half of it is covered ?

If we have to draw a diagram for Snell's LAW(only the sin i/sin r, rt? cause only one), should we just draw light travelling from a denser to a rarer medium, mark angles of incidence and refraction and state the law, or is there some other diagram??

I haven't started numericals yet... Any ideas how I should approach them?

Ok so if anyone is so kind enough to tell me when to convert kgf to N or even when g= 10m/s^2 is given, when should we convert. and is it necessary to convert to g from kg when solving for the Work done (Kinetic or potential energy.) I know its a silly doubt, but please help me.

How many chapters have you studied in physics?

which prism causes total internal reflection and refraction

Radioactivity is a nuclear phenomenon.comment on the statement.