Consider a length of green gel 570 nm, and a red wavelength of 750 nm. As a result of the doppler effect of light, a driver is accused of breaking the car over 80 km/ hr (50 MPH), if the driver does not exceed 80 km/ hr (80 km/ h), what is the actual speed of the driver's car as a result of the doppler effect on this light.

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A: The wavelength, λ=0.49 μm   Wien's displacement law, λ=2.898 μm.KT

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A: Given:

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A: Step 1: Step 2: Step 3: Step 4:

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Q: Ex. 1: What is the wave number of a beam of light in air, if its frequency is 14 × 104 Hz ?

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Q: If a light with wavelength 413 nm, is the same light with a frequency of 6.26×1014 Hz?

A: Given:  wavelength = 413 nm  velocity = 3 x 108 m/s

Q: What signal is plotted above? (a) u(t) – u(-t) (b) u(-t) – u(t) (c) 2u(t) – u(-t) (d) u(-t) – 2u(t)

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Q: The Compton displacement A is half the Compton wavelength if the scattering angle is * 45° 90° 60°…

A: Solution:-Given thatCompton displacement (∆λ)=12×Compton wavelength

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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.