1. A star in a distant galaxy approaches the Sun at 3 X 106 m/s. It emits a photon with a wavelength of 0.4 microns. Apply the Doppler Effect to estimate the observed wavelength of this photon. 2. An object is 2 meters from a thin lens with a focal length of 50 cm. Apply the thin-lens equation to calculate the image distance from the lens and magnification.
Compton effect
The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.
Recoil Velocity
The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.
1. A star in a distant galaxy approaches the Sun at 3 X 106 m/s. It emits a photon with a wavelength of 0.4 microns. Apply the Doppler Effect to estimate the observed wavelength of this photon.
2. An object is 2 meters from a thin lens with a focal length of 50 cm. Apply the thin-lens equation to calculate the image distance from the lens and magnification.
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