What is concave mirror
A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.
Should the antireflection coating of a microscope objective lens designed for use with ultraviolet light be thinner, thicker, or the same thickness as the coating on a lens designed for visible light?
the thickness to meet the equation must be less than in a system for visible Liz t _UV < t_visible
When a ray enters the film antireflector that generally has a refractive index greater than the glass index, it experiences a phase change of 180, similar to when we have a collision with a wall.
When the beam reaches the bottom of the film-glass interface film, the refractive impact of the film is greater than that of the glass, it does not experience any change in phase.
Within the film the beam experiences a change in its propagation speed, the frequency in the air and the film is the same, since the propagation of a resonant type process, to fulfill the equation
v = λₙ f
The wavelength must change c = λ₀ f
c / v = λ₀ /λₙ
n = λ₀ /λₙ
λₙ = λ₀ / n
In general this type of reflection is almost normal to the surface, so we can calculate the optical path difference, if t is the thickness of the film, for constructive interference
2t = m λₙ + λₙ / 2
2t = (m + ½) λₙ
This is the condition to see a bright beam.], For destructive interference the equation is
2t = m λₙ
t = m λₙ / 2
Since the wavelength of visible light 400 to 700 is not much male than the wavelength of ultra violet light Lam
Give a specific example of a machine,and describe how its mechanical efficiency might be calculated
Which of the following iis a scalar quantity? A.95 mph west
B. 8miles to the south
C. 100 feet
D. 14 m/s up