The answer of this has to be (E) 15 times.

Solution:-

let energy released for mag. m be e
hence energy for m+1 = 900% excess of e
i.e.
(900/100)*e + e = 10e

hence
energy for m ->e
energy for m+1->10e

now assume energy for mag 3.2 be e

4.7 = 3.2 + 1 + 0.5
therefore energy for mag. 4.7 -> 10e + 5e = 15e

hence energy for mag. 4.7 is 15e/e = 15 times the energy of mag. 3.2

Ishaan

Ishaan I hope you get that the intensity increases exponentially!

i dont know if i am right.... please dont get angry if i am doing it in stupid way

m+1 releases 900% more energy than m....i.e 9 times more for an increase by 1.
therefore for an increase by 1.5 * 9 = 13.5
approx equal to 15 times

arora007 wrote:Ishaan I hope you get that the intensity increases exponentially!

so is 15 not the answer???

saurabhmahajan wrote:i dont know if i am right.... please dont get angry if i am doing it in stupid way

m+1 releases 900% more energy than m....i.e 9 times more for an increase by 1.
therefore for an increase by 1.5 * 9 = 13.5
approx equal to 15 times

ebergy released by M : x

energy released by m+1 : 10 X

So for 3.2 units X units of energy is released

for 4.2 units 10 X units of Energy is released

for 5.2 units 100 X units of energy is released

So for 4.7 units , the value will be mean of 5.2 & 4.2 units

Pick C-- 55 units of energy .

I dont think this a foolproof method.. I felt like i am using some conventional milkmaid method used by my grandma! LOL

hey machoman good one. arora i didnt think about the geometric increase of the energy with the growth.

Ishaan