Question

solve this plz help anyone intelligent here ​

Answer 1

Answer:

n = 100/ 4 .969 × 10^ -19 = 2.012 × 10 ^20 .

Explanation:

P = 100 watt = 100 Js -1

E = hc = hc/lambda , h = 6.626 × 10 ^-34 ss , C = 3×10 ^8 m/s .

Lambda = 400 mm = 400 × 10 ^ 9 m

E = 6.626 × 10 ^ -34 × 10 ^ 2 / ( 400 × 10 ^-9 )

= 4 . 969 × 10 ^ -19 J

n × E = P

n × 4. 969 × 10 ^ -19 = 100

n = 100/ 4.969 × 10 ^19 = 2.012 × 10 ^ 20.

Answer 2

thise is solve

I hope this answer is right