ICSE − Q & A

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?

https://www.respaper.com/aayush25/3848-pdf.html --  Sound Q7 Can we also write density

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.