Athin glass rod is submerged in ethanol. what is the critical angle for light traveling inside the rod? express your answer with the appropriate units.

65.14°

Explanation:

The formula for the calculation of critical angle is:

Where,  

is the critical angle

is the refractive index of the refractive medium.

is the refractive index of the incident medium.

The light ray is travelling from glass to ethanol

Refractive medium is ethanol with refractive index = 1.361

Incident medium is glass with refractive index = 1.500

So,  

Applying in the formula as:

The critical angle is = sin⁻¹ 0.9073 = 65.14°

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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