Find the frequency of x-rays of wavelength 10^-10 m. (c= 3 x 10^8 m/s) A. 3 x 10

ID: 2300429 • Letter: F

Question

Find the frequency of x-rays of wavelength 10^-10 m. (c= 3 x 10^8 m/s)

A. 3 x 10^8 Hz

B. 3 x 10^16 Hz

C. 6 x 10^9 Hz

D. 3 x 10^8 Hz

In the Doppler effect for the electromagnetic waves, which of the following givers the greatest shift in frequency?

A. The source moving toward the non-moving observer at speed v

B. The observer moving toward the non-moving source at speed v

C. The source moving toward the approaching observer, both at speed v/2

D. All of the above give the same shift.

The Doppler shift for electromagnetic radiation from distant galaxies moving away from the observer is called a

A. red shift

B. blue shift

C. black shift

D. vacuum shift

1. apply V = Lf

L = 3e8/10^-10 = 3*10-^18

2. C. The source moving toward the approaching observer, both at speed v/2

3. redshift

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