A beam of monochromatic light goes from material 1 with index of refraction n, i

Question

A beam of monochromatic light goes from material 1 with index of refraction n, into material 2 with index of refraction n_2. The frequency of light in material 1 is f_1 and in material 2 is f_2. What is the ratio of f_1 / f_2? n_2/n_1 1 n_1 / n_2 The values of ni and m must be known to find the answer. Two resistors of values 4.0 and 12.0 Ohm are connected in parallel. Ibis combination in turn is hooked in series with a 2.0-Q resistor and a 20-V battery. What is the current in the 2- Ohm resistor? 6.0 A 4.0 A 12 A 2.0 A Resistors of values 6.0 Ohm, 4.0 Ohm. 10.0 Ohm and 7.0 Ohm are combined as shown. W hat is the equivalent resistant for this combination? 3.0 Ohm 27 Ohm 2.3 Ohm 10.7 Ohm A container of flint glass (n = 1.66) holds a small quantity of benzene (n = 1.501). What is the critic angle for internal reflection of a ray in the glass when it is incident on the glass-to-liquid surface? 37.0 degree 64.7 degree 41.1 degree 89.5 degree

Explanation / Answer

10. In the refraction of the light at the two different surfaces, frequency never changes, it remains constant, hence f1/f2 = 1

11.

Req = 2.0 + (4.0 ||12.0) = 2.0 + 3 = 5.0

I = V/Req = 20/5 = 4.0A

12.

Req = 6.0 + [(4.0+10.0)|| 7.0] = 6.0 + (14.0|| 7.0) = 6.0 + 4.7 = 10.7

13.

critical = sin^-1(n2/n1) = sin^-1(1.501/1.66)= 64.7 deg

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