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Author: Tinku Tara

Question-137547

Question Number 137547 by physicstutes last updated on 03/Apr/21 Commented by physicstutes last updated on 03/Apr/21 $$\mathrm{The}\:\mathrm{above}\:\mathrm{figure}\:\mathrm{shows}\:\mathrm{a}\:\mathrm{ray}\:\mathrm{of}\:\mathrm{light}\:\mathrm{of}\:\mathrm{frequency}\:\mathrm{1}.\mathrm{67}\:×\:\mathrm{10}^{\mathrm{12}} \mathrm{Hz}. \\ $$$$\mathrm{It}\:\mathrm{goes}\:\mathrm{from}\:\mathrm{a}\:\mathrm{space}\:\mathrm{of}\:\mathrm{refractive}\:\mathrm{index}\:\mathrm{1}.\mathrm{33},\:\mathrm{to}\:\mathrm{a}\:\mathrm{material}\:\mathrm{of}\:\mathrm{refractive} \\ $$$$\mathrm{index}\:\mathrm{1}.\mathrm{66}\:\mathrm{then}\:\mathrm{finally}\:\mathrm{to}\:\mathrm{another}\:\mathrm{material}\:\mathrm{as}\:\mathrm{shown}. \\ $$$$\:\mathrm{which}\:\mathrm{of}\:\mathrm{the}\:\mathrm{following}\:\mathrm{assertions}\:\mathrm{are}\:\mathrm{correct}\:\mathrm{about}\:\mathrm{the}\:\mathrm{refractive}\:\mathrm{index}\:\mathrm{of}\:\mathrm{the} \\…

In-a-great-reunion-each-person-knows-at-least-two-different-persons-in-there-Show-that-this-statement-implies-that-exists-one-person-who-has-to-know-everyone-

Question Number 6464 by nburiburu last updated on 27/Jun/16 $$“{In}\:{a}\:{great}\:{reunion}\:{each}\:{person}\:{knows} \\ $$$${at}\:{least}\:{two}\:{different}\:{persons}\:{in}\:{there}''.\:{Show}\: \\ $$$${that}\:{this}\:{statement}\:{implies}\:{that}\:{exists} \\ $$$${one}\:{person}\:{who}\:{has}\:{to}\:{know}\:{everyone}. \\ $$ Commented by prakash jain last updated on…