Imagine that you are playing a game of clue in which mrs. white is killed in the conservatory. you have a device in each room to you find the murderer: a spectrometer that detects the entire visible spectrum to indicate who is in that room. for example, if someone wearing yellow is in a room, light at 580 nm is reflected. the suspects are colonel mustard, professor plum, mr. green, mrs. peacock (blue), and miss scarlet. at the time of the murder, the spectrometer in the dining room recorded a reflection at 520 nm. the spectrometersin the lounge and study recorded reflections of higher frequencies, and the one in the library recorded a reflection of the second longest wavelength of the five recorded. who killed mrs. white?

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

d eras and periods

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.