(i) What is the relation between critical angle and refractive index of a material ? (ii) Does critical angle depend on the colour of light ? Explain. ANSWER (i) Refractive index = 1/sin C where C...
"Like if I have 5 tshirts and i want to gift them to my 5 cousins named A,B,C,D,E, so find number of ways in which particular cousin won't get their particular tshirts." So number of ways: D(n)=n!*(1-1/1!+1/2!-1/3!+.....(-1)^n*1/n!)) Where...
Once upon a time, a lady wanted to hire a cook for her restaurant. She interviewed many candidates and finally, she selected the one who impressed her in the interview. Lady was very impressed with his...