The type of conversion that is taking place when natural gas is
burned to heat water is referred to as chemical conversion. In this
conversion thermal energy is produced.
Answer:
649.8420 nm
Explanation:
We have given 
we have to find unknown wavelength that is 
The condition for constructive interference is 
Where d is distance between slits
is angle of emergence and n is order of maxima
Using constructive interference equation
---------eqn 1
---------eqn 2
On dividing eqn 1 by eqn 2


Explanation:
Particle moving in a circular path with a constant speed.