Answer:
according to the Bohr'smodel,
The change in wavelength, Δλ = λ₁ - λ₂ = λ₂ν/c
where λ are the respective wavelengths
ν = speed of the stars/objects =?
c = speed of light = 3 x 10⁸m/s
1. To find the speed for a star in which this line appears at wavelength 120.4 nm.
i.e λ₁ = 120.4nm and λ₂ = 121.6nm
ν = [(120.4nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = -2.71x10⁶m/s
2. To find the speed for a star in which this line appears at wavelength 120.4 nm.
i.e λ₁ = 120.4nm and λ₂ = 121.6nm
ν = [(120.4nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = -2.71x10⁶m/s
3. To find the speed for a star in which this line appears at wavelength 121.4 nm.
i.e λ₁ = 121.4nm and λ₂ = 121.6nm
ν = [(121.4nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = -4.94x10⁵m/s
4. To find the speed for a star in which this line appears at wavelength 121.4 nm.
i.e λ₁ = 121.4nm and λ₂ = 121.6nm
ν = [(121.4nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = -4.94x10⁵m/s
5. To find the speed for a star in which this line appears at wavelength 122.2 nm.
i.e λ₁ = 122.2nm and λ₂ = 121.6nm
ν = [(122.2nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = 9.872x10⁵m/s
6. To find the speed for a star in which this line appears at wavelength 122.2 nm.
i.e λ₁ = 122.2nm and λ₂ = 121.6nm
ν = [(122.2nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = 9.872x10⁵m/s
7. To find the speed for a star in which this line appears at wavelength 122.9 nm.
i.e λ₁ = 122.9nm and λ₂ = 121.6nm
ν = [(122.9nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = 2.08x10⁵m/s
8. To find the speed for a star in which this line appears at wavelength 122.9 nm.
i.e λ₁ = 122.9nm and λ₂ = 121.6nm
ν = [(122.9nm - 121.6nm)/121.6nm] x 3 x 10⁸m/s
ν = 2.08x10⁵m/s
