L24 refraction, lenses, & diffraction

​24-26

​When light hits a boundery (change of medium), some light will reflect but the rest refracts by slowing down, but why…
https://youtu.be/NLmpNM0sgYk?si=_YXVsioc6HZ-rguU

Multiple Choice

The statements are completed by the following information:

• i 414nm

  ii less

• i 414nm

  ii greater

• i 970nm

  ii less

• i 970nm

  ii greater

Fill in the Blanks

In a rainbow what wavelength of visible EMR tends to commonly be on the outer arch, as it refracts the least? (red=700nm where blue=400nm)

Fill in the Blanks

Based on this diagram let's calculate the index of refraction for the glass. (to the nearest hundredth)

Dry Lab for Optical (wave) Nature of EMR

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​https://youtube.com/shorts/b-Joj9d4aBI?si=xCTwnrnR4EbzAvxO

​Now, Consider if the same object were placed in front of a convex lens with a real focal length of 12.3cm.
What would the properties of the image be? (d_i , h_i , etc...)

​Recall from this mirror question that the d_i is negative confirming the virtual nature of the image, and that the focal length would also be negative
(which is always true for diverging mirrors).

​https://www.youtube.com/watch?v=IRBfpBPELmE&list=PL4GeZoa9_FQDK1sTrZP-WdlVu4C2Z1QJt&index=10