|

 khyati gupta's messages in the community 1 2 3 GO Go to Page...
Message
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

3cos x + 2cos 3x = cos y -----(1)

3 sin x + 2 sin 3x = sin y -----(2)

square eqns 1 n 2 and add them

ans: cos 2x=-1

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
bt i dnt wannna drop ....
i m jst asking abt this institute coz i m nt yet satisfied...
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

actually i live in rohini itself so it is just  a half km far from my home .......

i wnt to knw tht the placements of this collg wld be gud or is there any chance of this institute to cum next to maharaja agrasen in nxt 2 -3 yrs/.....

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
do anyone knw abt bhagwan parshuram institute?is it gud or average institue.do rply urgent
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
is the ans -117/4 units square
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
Ques- An X-ray tube operates at 40 kV.Suppose the electron converts 70% of its energy into a photon at each collision. Find the lowest three wavelengths emitted from the tube.Neglect the energy imparted to the atom with which the electron collides.

plz ans the ques as soon as possible
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
open the file in acrobat reader
select alll from the edit option
select copy n thn paste in microsoft word..
 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
2)i thnk the limit should be from 0 to pi/2
then u can solve it as follows

put sin a=t

cos a da=dt

0 t  cosa dt

0 1  t (1-t2)2 dt

nw open the square n solve it.......
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
primary rainbows r formed by two refractions and one total internal reflections by the rain drops
 This Post 0 points    (0    in 0 votes )   [?]
nice article ..... gud wrk!!!
 This Post 0 points    (0    in 0 votes )   [?]
nice article !!!!! keep it up..
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
IT IS GIVEN IN THE 12TH CLASS NCERT , SO REFER THAT 4 UR PROBLEM....
 This Post 0 points    (0    in 0 votes )   [?]
nice efforts!!!!!!
 This Post 0 points    (0    in 0 votes )   [?]
he he he gud ....
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
arre but focal length of the whole system do change n i m sure abt this...
 This Post 0 points    (0    in 0 votes )   [?]
r u sure abt this........???
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
but the focal length of the system changes..
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
2) This is the case of combination of lens, so image formed depends on both convex surface n the plane surface
3)yes the angle of deviation can be zero when the ray falls normally on the prism
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
1) Yes, when the object is virtual plane mirror can form real image
 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
He2 dosnt exist ,as bond order is 0
 1 2 3 GO Go to Page...
 Go to:  Select a forum   Board Exams - CBSE, ICSE, State Boards   Course Material   Computer Science   Physics   General Physics   Mechanics   Optics   Thermal Physics   Electricity   Magnetism   Modern Physics   Mathematics   Algebra   Trignometry   Analytical Geometry   Differential Calculus   Integral Calculus   Vectors   Chemistry   Physical Chemistry   Organic Chemistry   Inorganic Chemistry   Institutes & Courses   Coaching Institutes & Course Material   About IITs and JEE   Non IIT Institutes   Counselling Zone   Parents Corner   Parent Discussion Board   Biology (for Medical Entrance)   Botany   Zoology   Fun Zone   Lounge   Games, Puzzles and Quizzes   General Knowledge

Name

Mobile

E-mail

City

Class