Answer:
The observed wavelength of this radiation on Earth is 123.1 cm.
Explanation:
Given that,
A pulsar is a type of rotating neutron star that emits a beam of electromagnetic radiation.
A pulsar that is moving toward Earth at a speed of 880.500 km/s, [tex]v=880.5\ km/s=880.5000\ m/s[/tex]
It emits mostly radio waves with a wavelength (at the source) of 123.500 cm, [tex]\lambda=123.5\ cm[/tex]
We need to find the observed wavelength of this radiation on Earth. The observed wavelength is given by :
[tex]\lambda'=\lambda(1-\dfrac{v}{c})\\\\\lambda'=123.5\times 10^{-2}\times (1-\dfrac{880.5\times 10^3}{3\times 10^8})\\\\\lambda'=1.231\ m[/tex]
[tex]\lambda'=123.1\ cm[/tex]
So, the observed wavelength of this radiation on Earth is 123.1 cm.
On earth, the observed wavelength of this radiation will be "123.1 cm". To understand the calculation, check below.
According to the question,
Wavelength, λ = 123.5 cm
Pulsar's speed, v = 880.500 km/s or,
= 880.5000 m/s
We know the relation,
→ λ' = λ(1 - [tex]\frac{v}{c}[/tex])
By substituting the values,
= 123.5 × 10⁻² × (1 - [tex]\frac{880.5\times 10^3}{3\times 10^8}[/tex])
= 1.231 m or,
= 123.1 cm
Thus the approach above is correct.
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https://brainly.com/question/25847009
