Description : What is the frequency of a blue light with a wave length of 469 nanometers?
Last Answer : Frequency is in cycles per unit timeWavelength is in length per cycleTo convert between the two you need the speed of the wave -which for light is the speed of light - which is given in ... Gigahertz (GHz) ...rounded to 3 significant digits since the wavelength is only givento 3 significant digits
Description : If ‘367’ means ‘I am happy’; ‘748’ means ‘you are sad’ and ‘469’ means ‘happy and sad’ in a given code, then which of the following represents ‘and’ in that code? (A) 3 (B) 6 (C) 9 (D) 4
Last Answer : Answer: C