Sprint 1:34 PM ccle.ucla.edu C) stays the same 4 of 36e crec 15. Tho sprcading o

Question

Sprint 1:34 PM ccle.ucla.edu C) stays the same 4 of 36e crec 15. Tho sprcading of white light into its spectrum is called B) dispersion C) eeflection D) demodulation F) could be real or virtual, but always real when the objoct is placod at the focal point. 16. Ifa persons eychall is too shet frem fronm to back, the persen is lkely so suffer from A) abigmatism B) spherical aberration C) chromatic aberration D) farsightedness 17. Farsightedness can wally be comected with A) cylindrical lenses B) achromatic lenses. C) diverging lenses D) coaverging eses E) spherical lesses. 18. If the miror diameter of the telesoope becomes twice larper, the ligh-gathering power is A) The same R) Twice better C)Four times better D) Twice worse E) Four times worse 19. Cheose the cormect sequence of electromapnetic radiations, in oeder of increasing wavelengths A) X-Fay, ula-violet, visible, radio R) radio, ubra-violet, visible, X-ray C) visible, X-ay, la-violet, adie D) X-ray, visible, ultra-violet, radio E) X ay, visible, radio, ultra-violet 20. The images formed by concave lenses A) are always real. R) are always virtual C) could be real or virtual; it dependen whether the object distance is smaller or greaer than the focal ength When anmospherie pressure increases, what happens so the absolune peessure an the botom of a pool A) It does not change B) I increases by a lesser amount. C) I increases by the same amount D) It incrcascs by a prcater amoun F) lt depends on the dath of the pool.

Explanation / Answer

15) Spreading of white light is called

dispersion

16) If a person's eyeball is too short from front to back, the person is likely to suffer from
farsightedness

17) Farsightedness is corrected with

converging lens

18) If the mirror diameter becomes twice larger, the light gathering power becomes

four times better

19) In order of increasing wavelengths

X rays, Ultraviolet rays, visible light, radio waves

20) Images formed by concave lenses are

always virtual

21) When atmospheric increases, the pressure at the bottom of the pool

increases by the same amount

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