Honors Physics Final Review An image that appears to form within the reflective surface is a ________ image? ans: virtual The reference line perpendicular to the reflective surface is called the ___ ans: normal How is a plane mirror and a convex mirror alike? ans: both form virtual images only

As the wavelength increases, the frequency will ______________. ans: decreases What is the speed of all electromagnetic radiation? ans: 3 x 10 8 m/s Which has a greater frequency: Red light or Blue light: ans: Blue light

An object is placed 5 cm in front of a plane mirror, where will the image appear? ans: 5 cm into the reflective surface Where is an object placed in front of a concave mirror for the image to seem to disappear? ans: at F Where is the object place in front of a concave mirror for the image to be the same size? ans: at C

What type of wave is a series of compressions and rarefraction? ans: longitudual A mechanical wave has a wavelength of 40 cm and a frequency of 32 Hz. What is the speed of the wave? ans: 1280 cm/s What is the wavelength of a light wave with a frequency of 4.7 x Hz in nm? ans: 638 nm

What is the color of the light at 638 nm? ans reddish orange Rank high frequency to low: UV, FM, yellow ans: UV  yellow  FM What is the equation for magnification? ans: M = –q/p, M = -di/do What is q and p above? ans q = focal length p = distance to object

A beam of light travels from a medium with n= 1.33 to a index of n = Will the beam bend toward or away from the normal? ans: away Which medium is denser, n = 1.66 or n = ans: n= What is the index of refraction for a light that travels at 2.26 x 10 8 m/s? ans: 1.33

Light travels from the air at an angle of incident of 12 o into a pool of pure water (n = 1.33). Will the light bend away or toward the normal? ans: toward the normal What is the angle of refraction for the above? ans: 9 o The angle of incident when the refracted light is bend parallel to the medium interface is: ans: critical angle

When will internal refraction occur: 1) when light travels from air to glass or 2) when light travels from glass to air? ans: greater dense to less dense, #2 What is the equation for the critical angle? ans: θ c = n r / n i for n i > n r Which would have a smaller angle of incident before the critical angle is reached: flint glass or diamond ans: diamond: greater density = smaller critical angle

In which medium does light travel slower: water or glass? ans: glass b/c denser What two things MUST be true for constructive interference to occur? ans; in-phase and same wavelength What type of wave interaction is described: Two fronts approach each other. One is displaced by 10 cm and the other displaced by 8 cm. At the point of crossover the displacement is 2 cm. ans: destructive interference

After the interaction from above is complete, what is the displacement of the two waves? ans: 10 cm and 8 cm A first order line appears 13.2 mm from the central bright line from two slits 1.9 x m apart. What is the λ with a screen 0.6 m ans 418 nm

What is the SI unit for electrical charge? ans: coulomb, c What will happen to the force between two charged bodies one + the other - as they are brought closer together? ans: force will increase Surface charges can be induced on insulators by __________? ans: polarization

The process of charging a conductor by bring it near another charged object and grounding the conductor is called: ans: induction The force acting between two charged bodies is directly proportional to the size of the bodies and inverse to the distance squared between the bodies is what Law: ans: Coulombs Law The SI unit of current is ans: ampere’, A

The SI unit of potential difference is ans: volts, V The SI unit for power is? ans : Watt, W What is the equation for Ohm’s Law? ans Ω = V / I What is the equation that define power? ans: P = V 2 / Ω

What is the potential difference of a battery with 3 cells at 1.5 v each arranged in parallel ans: 1.5 v What is the potential difference in the above if the cells are arranged in series? ans: 4.5 volts The amount of force exerted on a container is transmitted equally throughout that container is a description of : ans: Pascal’s Principle

NOTE Read a parallel and series circuit Calculate position to image and magnification. Calculate electric force Calculate power, current, voltage, resistance. (also from a circuit diagram) Calculate magnetic force