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Edexcel | Physics WPH0 | W 19 4 1 | 1 hour 30 minutes
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1 Mark

Electrons can be used to investigate atomic nuclei.

Which of the following is not a reason why electrons can be used for such an

investigation?

A Electrons can be accelerated to very high speeds.

B Electrons can have wavelengths similar to the size of atomic nuclei.

C Electrons have negative charge.

D Electrons undergo diffraction.

The only correct answer is C because a positively charged particle could

be used

A is not correct because this is a reason for using electrons

B is not correct because this is a reason for using electrons

D is not correct because this is a reason for using electrons

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