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Elektron mula mula diam dipercepat dalam potensial 200 V. Maka panjang gelombang de Broglie elektron sebesar ….( h = 6 , 6 x 1 0 − 34 Js dan me = 9 , 1 x 1 0 − 31 kg )

Elektron mula mula diam dipercepat dalam potensial 200 V. Maka panjang gelombang de Broglie elektron sebesar ….( )

  1. 0,77 undefined

  2. 0,87 undefined

  3. 0,77 begin mathsize 14px style cross times 10 to the power of negative 8 end exponent straight m end style

  4. 0,,87 begin mathsize 14px style cross times 10 to the power of negative 8 end exponent straight m end style

  5. 0,97 begin mathsize 14px style cross times 10 to the power of negative 8 end exponent straight m end style

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R. Amalia

Master Teacher

Mahasiswa/Alumni Universitas Padjadjaran

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Pembahasan

persamaan panjang gelombang de Broglie :

persamaan panjang gelombang de Broglie :

begin mathsize 14px style lambda equals fraction numerator h over denominator m v end fraction lambda equals fraction numerator h over denominator square root of 2 m E end root end fraction lambda equals fraction numerator h over denominator square root of 2 m q V end root end fraction lambda equals fraction numerator 6 , 6 cross times 10 to the power of negative 34 end exponent over denominator square root of 2 open parentheses 9 , 1 cross times 10 to the power of negative 31 end exponent close parentheses open parentheses 1 , 6 cross times 10 to the power of negative 19 end exponent close parentheses open parentheses 200 close parentheses end root end fraction lambda equals fraction numerator 6 , 6 cross times 10 to the power of negative 34 end exponent over denominator 7 , 6 cross times 10 to the power of negative 24 end exponent end fraction lambda equals 0 , 87 cross times 10 to the power of negative 10 end exponent straight m end style 

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Elektron mula mula diam dipercepat dalam potensial 550 V. Maka panjang gelombang de Broglie elektron sebesar ….( h = 6 , 6 x 1 0 − 34 J s d an m e = 9 , 1 x 1 0 − 31 k g )

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