<span>When two waves of same frequency travel in a medium simultaneously in the same direction then, due to their superposition, the resultant intensity at any point of the medium is different from the sum of intensities of the two waves. At certain points the intensity of the resultant wave has a large value while at some points it has a very small or zero. This is called wave interference.</span>
Answer:
- The emission wavelength for λ(3,4) is 1875.24 nm
- The emission wavelength for λ(4,6) is 2625.34 nm
- The emission wavelength for λ(4,7) is 2165.69 nm
- The emission wavelength for λ(4,8) is 1944.70 nm
- The emission wavelength for λ(4,9) is 1817.54 nm
Explanation:
Using Rydberg equation
where;
R is Rydberg equation = 1.097 x 10⁷ m⁻¹
For λ(3,4)
For λ(4,6)
For λ(4,7)
For λ(4,8)
For λ(4,9)
Answer:
The mass of water is
Explanation:
Given that,
Area of town = 29 km²
Time = 30 min
Height = 2.4 inch
Mass = 103 kg
We know that,
1 m = 39.37 inch
So,
We need to calculate the volume
Using formula of volume
Put the value into the formula
We need to calculate the mass of water
Using formula of density
Put the value into the formula
Hence, The mass of water is