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I have a question. Please see the attachment and answer with explanation.

Physics
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Question number 41
Question Number 30

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Hi Aadarsh, tell me what relationships have you learnt that would help you solve this?
And what do you know about parallel circuits and series?
In series connection, resistors are joined end to end. Current remains same. Effective resistance is greater than highest individual resistance.
In parallel, just the opposite.
30 B option is correct... this is assuming all batteries have equal EMF..
Question Number 49 also
Shaan, can you lead Aadarsh through the answer?
He will not be able to answer the next Q till he understands your logic.
For question 30, can't D be the answer?
Non ..circuit D provides EMF of V while circuit A provides EMF of 3V ...
circuit B *
But How?
The other questions?
okk see I will go one by one.. 1) cannot be correct because circuit A provides more EMF assuming resistance to be the same we bulb would glow brighter in A. 2) is correct because the circuit load is distributed among the batteries and also the net power consumption by bulb in circuit B is lesser than A 3) is incorrect because yet again the circuit load is distributed in B and power consumption is less in B 4) is incorrect because of reasons already given
Thanks a lot. Now please look at the other questions(41 and 49).
Aadars, why don't you start working on it here. Shan will help, but yo should get started. How else will you get it during the test?
Okay maaam. I am trying my best.
Shaan, good work. Thanks for working through this. How is life at IITk?
I think question number 41 - "A" is correct, and for question 49, "A" is correct. Not sure.
Lenz's law does not violate principle of energy hence the assertion is wrong for 41) ... for 41 D is the correct answer..
Hi preetha .. I am presently in IIMA ..I passed out of IITK
Ooooooo. Okay okay. Got it. 49?
Great. Thats the fast track to fame and fortune. You should write that in your profile.
do you know why lenz's law is in tune with conservation of energy? think it has a very simple solution .. think logically.. hint is that induced EMF is such that it OPPOSES the change in flux..
I have read the above statement. But completely forgot about the first assumption.
question number 49? Is "A" correct?
I can't see 49
Okay, did u see the other 2 links?
Question Numebr 49
Google this .. I dunno about this question ... but pupil expands when there is dim light (to get more light ) .. somewhat like aperture of a camera but I am not sure whether it contracts when trying to see a distant object...
Okay Then. Wat about ur opinion about the other 2 links?
I think it is A. The pupil restricts the amount of light entering the eye. When you go from dark to light, it responds to protect the eye from an overload to the system
Yeah, for the same analogy, I too wrote "A". Are u sure? Please see the links numbered 1 and 2.
Plzzzzzzzzzzzzzzzzzzzzzzzzzzz do see the links and help.
I answered your yellow light question. Where are these questions from? What level are you? School? College?
I am in school, grade 10, CBSE from INDIA. THese questions are from NSTSE Stage 2.
Atmosphere question?
I got it. the option for the yellow question is "D". See this link: http://www.scribd.com/sadiq_noori/d/76372104-Quiz-Questions-and-Answers-Current-Affairs-Quiz-Questions-7
Atmosphere question? Plzzzzzzzzz reply.

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