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cantdophysics
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How much force (in Newtons) is exerted on a mirror when a 12.0W laser beam of red light (675 nm) strikes the mirror normal to its surface? (Assume no light is absorbed)
How how how how?
kthx
How how how how?
kthx
The force exerted on a mirror by a laser beam is known as radiation pressure. This force is caused by the photons in the laser beam colliding with the surface of the mirror and transferring their momentum to it.
The force exerted by a laser beam on a mirror can be calculated using the formula F = (2P)/c, where F is the force, P is the power of the laser beam, and c is the speed of light.
Yes, the wavelength of the laser beam does affect the force exerted on the mirror. Shorter wavelengths have a higher energy and therefore can exert a greater force on the mirror compared to longer wavelengths.
Yes, the force exerted on a mirror by a laser beam can be controlled by adjusting the power and direction of the laser beam. The angle at which the laser beam hits the mirror can also affect the force exerted.
Understanding the force exerted on a mirror by a laser beam is important in various fields such as optics, astronomy, and engineering. It allows for precise manipulation of mirrors and can be used in technologies such as laser cutting and laser propulsion systems.