Roboguru

Jika tetapan planck , kecepatan cahaya , dan panjang gelombang cahaya  maka energi foton cahaya itu adalah....

Pertanyaan

Jika tetapan planck 6 comma 6 cross times 10 to the power of negative 34 end exponent space Js, kecepatan cahaya 3 cross times 10 to the power of 8 space straight m divided by straight s, dan panjang gelombang cahaya 6000 space Angstrom maka energi foton cahaya itu adalah....

  1. 3 comma 3 cross times 10 to the power of negative 21 end exponent space straight J 

  2. 0 comma 3 cross times 10 to the power of negative 19 end exponent space straight J

  3. 3 comma 3 cross times 10 to the power of negative 19 end exponent space straight J

  4. 3 cross times 10 to the power of negative 19 end exponent space straight J

  5. 33 cross times 10 to the power of negative 19 end exponent space straight J

Pembahasan Soal:

table attributes columnalign right center left columnspacing 0px end attributes row h equals cell 6 comma 6 cross times 10 to the power of negative 34 end exponent space Js end cell row c equals cell 3 cross times 10 to the power of 8 space straight m divided by straight s end cell row lambda equals cell 6000 space Angstrom equals 6000 cross times 10 to the power of negative 10 end exponent space straight m end cell row E equals cell fraction numerator h c over denominator lambda end fraction end cell row E equals cell fraction numerator 6 comma 6 cross times 10 to the power of negative 34 end exponent times 3 cross times 10 to the power of 8 over denominator 6000 cross times 10 to the power of negative 10 end exponent end fraction end cell row E equals cell 3 comma 3 cross times 10 to the power of negative 19 end exponent space straight J end cell row blank blank blank end table

Jadi, jawaban yang tepat adalah C

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 04 Mei 2021

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