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mukesh

This page lists questions and answers that were posted by visitors named mukesh.

Questions

The following questions were asked by visitors named mukesh.

in a class 1/3 of students play cricket 1/8 play volleyball, 1/6 play tennis and the rest don't play any games. what fraction of the students doesn't play any games?
14 years ago
ABCD is a parallelogram. L and M are points on AB and DC respectively and AL=CM. Prove that LM and BD bisect each other.
13 years ago
A girl walks 12 km at the speed of 3 km/h. what change should she make in her speed to take (i) an hour less and (ii) an hour more to cover the distance?
10 years ago
we did not grow rice voice
8 years ago
Find the projection of the line 3x – y +2z – 1 = 0, x +2y – z = 2 on the plane 3x + 2y +z = 0.
7 years ago
Find the equation to the cone whose vertex is the point (a,b,c) and whose generating lines intersects the conic px2 + qy2 = 1, z = 0.
7 years ago

Answers

The following answers were posted by visitors named mukesh.

we know that energy in nth level is (hc/lemda),here denote lemda=l so E=E1-E2=2.4ev E=E1-E2=hc/l; put the value of "h and c" {1ev=1.6*10^-19j} 2.4*1.6*10^-19 =(6.64*10^-34 *3*10^8)/l l=5.187*10^-7m=518.7nm so answer is (d)
9 years ago
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