Answer:- The wavelength is and the right option is D.
Solution:- Wavelength is inversely proportional to the frequency and the equation is:
where, is the wavelength, c is the speed of light and is frequency.
Frequency is and the speed of light is .
Since,
So,
Let's plug in the values in the equation:
Hence, the right option is D) .
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Answer:
The given statement is true.
Explanation:
The given statement is true.
As per an estimate, to convert graphite into diamond nearly 1 billion to 3.3 billion years of time is required.
Graphite converts into diamond when high-pressure is applied deep in the earth core.
Answer:
.3422 M
Explanation:
Mole weight of NaCl ( from periodic table) = 58.439 gm/mole
20 g is how many moles ? 20 g / 58.439 gm/mole=.3422 mole
.3422 mole / 1 liter .3422 M