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ฟิสิกส์โอลิมปิก วิทยาศาสตร์โอลิมปิก ข้อสอบแข่งขัน ข้อสอบชิงทุน => GRE - Physics => Topic started by: conantee on January 04, 2010, 04:35:25 AM



Title: GR8677.056
Post by: conantee on January 04, 2010, 04:35:25 AM
56. If \psi is a normalized solution of the Schrodinger equation and Q is the operator corresponding to a physical observable x, the quantity \psi ^* Q \psi may be integrated in order to obtain the
(A) normalization constant for \psi
(B) spatial overlap of Q with \psi
(C) mean value of x
(D) uncertainty in x
(E) time derivative of x


Title: Re: GR8677.056
Post by: conantee on February 01, 2010, 08:07:59 AM
This is very fundamental concept in Quantum mechanics. There is no trick about this.

The right answer is (C). 79 of 100 people got the correct answer.