Question

Plank's Constant

Answer 1

@Abhisar

Answer 2

http://prntscr.com/582t1f

Answer 3

#a

E=h\(\sf \nu\)
=> \(\sf 6.6 \times 10^{-34} \times 3.61 \times 10^{11}\)
= \(\sf 23.826 \times 10^{-12}\) joules

Answer 4

Got it ?

Answer 5

Yup

Answer 6

#b
Similarly, \(\sf E=h\frac{c}{\lambda}\\ \sf c=speed~of~light\\ \sf \lambda =wavelength~in~metre\)

Answer 7

Notice that the wavelength given in 2nd question is in Nano metres. Convert it into metre and plug in the values in the above formula and finally find the value of energy in joules.

Answer 8

Got it ?

Answer 9

So far so good

Answer 10

ok, so you done ?

Answer 11

What should Ive gotten for number 2?

Answer 12

I havn't ca;cu;ated it...hang on

Answer 13

Ok sure

Answer 14

*calculated

Answer 15

\(\approx 3.18 \times 10^{-19}\)

Answer 16

What have you got ?

Answer 17

Ok I was completely different

Answer 18

check and you were right though

Answer 19

so thats good

Answer 20

\(\sf \huge \frac{6.6 \times 10^{-34} \times 3 \times 10^8}{6.21 \times 10^2 \times 10^{-9}}\)

Answer 21

first one was wrong though Im assuming I provided too many digits?

Answer 22

No, i have done a mistake there......in first one it will be
\(\sf 23.826 \times 10^{-23}\)

Answer 23

Aw shoot

Answer 24

or properly \(\sf 2.3826 \times 10^{-22}\)

Answer 25

Ok thanks for your help!