I did the verification of gas laws.

Try investigation of water samples

Or study the setting of cement

Or Extraction of iron from spinach leaves

Or experiment showing equilibrium

Check www.sirazenet.com/chemistry

For q12, use :

 mod(V_ab) =rt(v_a² + v_b² - 2v_av_b cos @.)...............ie relative motion formula..

So for maximum magnitude velocity, @ =90..

Thus he should swim straight!

Simple isnt it,once you know the formula?

For q13, make the triangle between one pulley, mass and the point straight above it.Differentiate length of string and you'll get the solution.

Try it.If you dont get it, visit :

http://www.goiit.com/posts/list/mechanics-please-fin-velocity-33091.htm

hmm...one of my friends had done a sudoku game using C++ as 11th project...

So I think solving should also be possible!!

Please reply someone!!!

Principal axis of what?

See, the two parts cant converge...they just bend light...so there isnt any question of the two 'separate lenses' forming different images?

Why don't you just put a pencil in front of a lens and try to converge sunlight on the ground?

Just try it!!!

But if all that is true, you mean to say the people who faked the photos were so dumb??

Moreover, in today's world, a fake like that wouldn't survive, there'd be a million people to pull it down...

What say?

Youngest-HCV-question-solver!:-DD

C'mon..its there even in 10th NCERT text,about mirrors.

Extrapolate that a little if you dont believe the reasons given by all of us!!

@visa....see the figure given on page1....its just painted in the centre!!

What you are sayin will happen only if you BREAK the lens and SEPARATE the pieces!!

Check it out :

http://www.goiit.com/posts/list/general-effect-of-water-33370.htm

See the attached figure.

When the sun is at the horizon, the rays travel more distance through the Earths atmosphere.Hence they get scattered more, and red, having highest wavelength,travels faster.

When sun is overhead, it traverses less distance in the atmosphere and thus has less scattering.

This is also the reason why it looks bigger at sunrise and sunset.

Thanks!:-)

No, he's not considered internal arrangement.

He's considered the trio of ABC to be in all the different places.

If the question was that ABC lecture right in the beginning(or at any fixed time), then it'll be 4! as someone said.

Does that make it clear?

Guys, he's asking about OBJECTIVE for IIT...which is only one volume!!

I feel its great and if done after doing Verma, nearly finishes your preparation.Its graded very well and all formats of questions are given in ample number.

But try it only after you feel thorough with the concepts.