Lampu natrium 20 W memancarkan cahaya kuning dengan panjang gelombang 589 nm. Berapakah jumlah foton yang dipancarkan lampu itu setiap detik?

Jawaban:

$begin mathsize 14px style P over t equals n fraction numerator h c over denominator lambda end fraction 20 over 1 equals n fraction numerator 6 comma 63 cross times 10 to the power of negative 34 end exponent cross times 3 cross times 10 to the power of 8 over denominator 589 cross times 10 to the power of negative 9 end exponent end fraction n equals fraction numerator 1178 cross times 10 to the power of negative 8 end exponent over denominator 19 comma 89 cross times 10 to the power of negative 26 end exponent end fraction equals 59 comma 23 cross times 10 to the power of 18 equals 5 comma 9 cross times 10 to the power of 19 end style$

Ruangguru

RUANGGURU HQ

Jl. Dr. Saharjo No.161, Manggarai Selatan, Tebet, Kota Jakarta Selatan, Daerah Khusus Ibukota Jakarta 12860

Coba GRATIS Aplikasi Ruangguru

Download di Google Play

Download di Appstore

Produk Ruangguru

Produk Lainnya

Bantuan & Panduan

Hubungi Kami

081578200000

[email protected]

02140008000

Ikuti Kami

Instagram

Facebook

Twitter

Youtube