Alaser beam is incident at an angle of 30.2â° to the vertical onto a solution of corn syrup in water. (a) if the beam is refracted to 18.50â° to the vertical, what is the index of refraction of the syrup solution? (b) suppose the light is red, with wavelength 632.8 nm in a vacuum. find its wavelength in the solution. nm (c) find its frequency in the solution. hz (d) find its speed in the solution. m/s

Explanation:

a ) Refractive index (μ ) = Sin i / Sin r

i is angle of incidence = 30.2 and r is angle of refraction = 18.5 degree

μ = Sin 30.2 / sin 18.5 = 0.5030 / .3173 = 1.585.

b ) Wave length  in a medium =  wavelength in air / refractive index

= 632.8 / 1.585 =  399.24 nm.

c ) frequency in solution = frequency in vacuum

=

= 47 x 10¹³ Hz

d ) Speed in the solution = Speed in vacuum / Refractive index

=

= 1.893 x 10⁸ ms⁻¹.

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

the largest known star in the universe is uy scuti, a hypergiant with a radius around 1,700 times larger than the sun.jul 26, 2018

explanation: