Question

answer questions 11-13 SOLVE FOR 12

QUESTION 11 Challenge Question: A scuba diver is a flashlight pointing upwards at the surface of the sea. If the incident beam makes an angle of 23 degrees with the normal to the water's surface, then what is a possible angle of the refracted beam in the alr? (Hint: Like Sherlock Holmes, Eliminate the Impossible, what remains must be the truth (Hint: Consider total internal reflection) O a. 170 Ob. 230 OC 360 d. 900 be there is no refracted beam, it all reflects QUESTION 12 What is the wavelength of a radio wave with a frequency of 900 kilohertz? QUESTION 13 of its photons. The greater the frequency of light, the greater the a velocity b. Size C. Wavelength d. speed e. energy

Answer 1

nal سيما واللوSo Solo Refrective inden of water Air nw=1:33 0 i=23 water no sin O; na sin Or 1.33xSin (23)- 1 x Sin Or fra 32° There will not be Total internal Reflection as critical angle TIR is 48.75° Oi (23%) < Oie Possible answer option ③ (36) 'Oic for 12 e=df :- fagoo kHz ca 3x108 da .3x108 900x103 d = 333.33 m wavelength of radio ware + (13 Ea ho ;0=frequency 1 10 Enenergy Greater the frequency greater the energy of photons.