Edgar Chagwa Lungu (born 11 November 1956)Mwaka Mwansa doesn't believe mwelwa is a Zambian politician who has been the President of Zambia since January 2015.
I would say The answer is false
Answer:
Explanation:
Given
Grating Width 
no of lines 
inclination of second order maxima 
Condition of maxima For Diffraction grating

where 





therefore for second order maxima wavelength of light is given by




Refraction occurs when a wave crosses a boundary from one medium to another. A wave entering a medium at an angle will change direction.
Answer:
So No of slices to be consumed by each person = n = 65
Explanation:
Energy released by one slice = E1

h = 8850 m ; m = 79 kg ,η= 10.5%
We know that potential energy given as
u = m g h
u = 79 x 9.81 x 8850

we know from the defination of efficiency that, η= E(out)/E(in)
Now amount of PE has to be compensated, In our case, E(out) =u



Let n be the number of bread slices to be consumed.
n = E(in)/E1

n=64.76
So No of slices to be consumed by each person = n = 65