An experiment shows that two perfectly neutral parallel metal plates separated by a small distance d attract each other via a very weak force known as the Casimir force. The force per unit area of the plates F depends only on the Planck constant h on the speed of light c and on d .Which of the following has the best chance of being correct for F ?
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F=New→n/m^2
hc/d2=joule−sec(metre/sec.)1/(metre^)2
Joule/metre=newton
hc/d^4=(hc/d2)1/d^2=newton/m^2hence F=hc/d^4 hd/c=joule.sec(metre)^2/(metre/sec.)=newton−metre^2sec^2
d^4/hc=1/ ( hc/ d^4)=m^2/newton
answer should be B
hope it helps
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