Messages posted by avi_shri22@goiit.com

IT'S VERY NICE TO SEE THAT YOU WANT TO CLEAR BASICS IN MORDERN PHYSICS . NO DOUBT IT'S VERY IMPORTANT WITH RESPECT TO JEE . I WOULD REFER YOU ARIHANT , DO ONLY SOLVED EXAMPLE AND OBJECTIVE TYPE , BUT YOU NEED TO LOOK TO YOUR STRONGER TOPICS TO MAKE IT STRONGEST . YOU MUST GIVE THE TEST SERIES OF AKASH . THAT WILL REALLY HELP YOU .

HI RISHAB, IT'S VERY NICE THAT YOU CAN DO 80% QUS. NOW IF YOU WANT TO GO TO IRODOV....IT IS SUGGESTED THAT YOU MUST GO THOUGH ALL JEE SUBJECTIVE QUESTIONS . IT WILL HELP YOU A LOT IN IRODOV . BUT DON'T GO MUCH IN DEPTH IN IRODOV, RESTRICT YOURSELF TO SOME CONCEPTS RATHER THAN CALCULATIONS...

no dear , gravitation needs some basic concepts from work power and energy . so , to understand grav. in a better way mainly gravitational potential u must go through wpe !! !!!!

see, there are many ways to declare...but brownsted lowry's the best

in hc.verma there is only one question based on constraint eq. so, you must see d.c.pandey...but don't go for subjective problems......just see it to understand the basics !

as you are saying.. w = w0 + alpha *t

here w is unknown so you can't apply that eq. and you apllied wrong as weel because if you apply that then you ans. must have w term which is absent.

can you give the pic. of this prob. ,for more clarification !

problem to pucho kya hai ?

let x1 = a

x2 = ar

x3 = ar^2

x4 = ar^3

from theory of eqn.

x1 + x2 = 3

a + ar = 3 - - - - (1)

& ar^2 +ar^3 = 12 - - - -(2)

solve 1 and 2 to get a and r

then put these values to get x1,x2,x3,x4

then use again theory of eqn.

x1*x2 = A & x3*x4 = B

you will get your ans.

this approach really helps and use it in most questions !

ans. must be-;

minimum = 1/2sin^-(1/10)

maximum == 1/2sin^-(9/10)

why not

from the instance when it is going into the plank till 40 cm aplly first eqn. of motion

v^2 / 4 = v^2 -2a*40 - - - - -1

then from 40 cm till it comes to rest

0= v^2 / 4 - 2a*x - - - - -2

(here , x = req. distance , a = acceleration(assumed constant) , and v = = velocity with which it enters plank)

you have two eqns. solve it

answer must be (b)

permutations means to arrange things but combinations means to select a thing

as we know the eqn. s = ut + 1/2 a t^2 and here for vertical motion u = 0 because there is no vertical speed imparted on the ball.

they will strike in same time

i am just giving ans. to living for dying that both will strike the ground in same time

can we get any advantage by state ranks?

THESE ARE THE SUBSTANCES ADDED WHEN THERE ARE MORE THAN ONE COMPOUND AND AMONG THEM ONE HAS TO BE CONCENTRATED. WE USE IT IN FROATH FLOATATION PROCESS. FOR EX.- NACN IS USED AS A DEPRESSING AGENT.

VERY DIFFICULT ONE. I BET NO ONE CAN SOLVE IT!!!!!!!

no, it's not the answer as well!!!!!!!!

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