Index of refraction of a substance =
(speed of light in vacuum) / (speed of light in the substance)
Index in quartz = (2.9979 x 10⁸ m/s) / (2.0567 x 10⁸ m/s)
<em>Index = 1.4576 </em> (no units)
Use force equals mass times change in speed divided by time taken which is Newton’s second law.
Answer:
n = 19
Explanation:
= Wavelength of the light absorbed = 91.65 nm = 91.65 x 10⁻⁹ m
= nth level = n
= 1
Using conservation of energy

Answer:
<em> The current decreases.</em>
Explanation:
Answer:
- energy possessed by any object due to its position in gravitational field
- it is given by the equation P.E.= mgh where m = mass ,g= gravitational force of earth ( 9.8m/s^2) and h= hight of the object
- there for for above problem m = 20kg , h= 10 m and g= (9.8m/s^2)
- p.E. = 20×10×9.8 =1960 jules
Explanation:
hope it helped u buddy :-)