A small metal ball is suspended in a uniform | vedclass

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(A) When a high-energy $X$-ray beam falls on the metal ball,the photoelectric effect occurs,causing the emission of electrons from the surface of the

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will be deflected in the direction of the field

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(A) When a high-energy $X$-ray beam falls on the metal ball,the photoelectric effect occurs,causing the emission of electrons from the surface of the metal ball.As electrons are emitted,the metal ball loses negative charge and consequently becomes positively charged.$A$ positively charged object placed in a uniform electric field experiences an electrostatic force $F = qE$ in the direction of the electric field.Therefore,the metal ball will be deflected in the direction of the electric field.

$A$ small metal ball is suspended in a uniform electric field with the help of an insulated thread. If a high-energy $X$-ray beam falls on the ball,then the ball

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