Question

2×0^16-8.68×10^13

please solve in step by step​

Answer 1

Answer: Step-By-Step

hv=hv0+KE  

Threshold frequency (v0)=8.68×1015Hz(s−1)

Frequency of light (v)=2×1016Hz

KE =h(v−v0)

=6.626×10−34(2×1016−8.68×10−15)

KE=7.5×10−18J

Maximum kinetic energy of photoelectrons =7.5×10−18J

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Answer 2

Answer:

- 86800000000000

Step-by-step explanation:

Firstly,

2d 0^16 = 0

secondly,

8.68 × 10^13 = 86800000000000

& thirdly,

0 - 86800000000000 = - 86800000000000