Answer:
Explanation:
This is case of interference in thin films
for constructive interference in thin film the condition is
2μ t = (2n+1)λ/2 ; μ is refractive index of oil , t is thickness of oil , λ is wave length of light .
2 x 1.28 x t = λ/2 , if n = 0
2 x 1.28 x t = 605 /2
t = 118.16 nm .
the minimum non-zero thickness of the oil film required = 118.16 nm.
B is the right answer. Multiply numbers you get the answer
Answer:
30 m
Explanation:
The wavelength of a wave is found by the velocity divided by the frequency. Therefore, the wavelength is (300 m/s)/(10 Hz) = 30 m
I hope this helps! :)
Answer:435 Representatives
Explanation:The lower chamber of Congress, in which the number of representatives per state is determined by the state's population, with 435 Representatives total. Members of the House of Representatives serve two-year terms, so they are up for reelection every two years.
<span>Solar prominences
themselves are of no concern because they are visible in the Hydrogen Alpha
wavelength. They are anchored in place by magnetic fields. When these fields
break or reconnect, it can send the plasma that makes up the prominence away
from the sun. If one of these clouds impacts Earth, they are called CMEs or
coronal mass ejections. Depending on the magnetic orientation of the cloud with
respect to Earth's the CME can break down our magnetic field resulting in
geomagnetic storms, aurorae, power grid fluctuations, and particle radiation
near the poles, satellite single upset events, and radio blackouts. </span>
<span>
</span>
<span>Thus, letter a is the answer. </span>
