A Light Ray Makes an Angle of 42º with the Normal

question 14

Multiple Choice

A light ray makes an angle of 42º with the normal to a glass-water surface on the glass side of the surface. The angle $\theta$ in the water is

• A) 42º
• B) 36º
• C) 63º
• D) 49º
• E) 27º

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Definitions:

Spinothalamic Tracts

Neural pathways in the spinal cord that transmit pain and temperature sensations to the brain.

Dorsal Column Tracts

Sensory pathways in the spinal cord that convey touch, vibration, and proprioceptive information to the brain.

Tactile Corpuscles

Specialized nerve endings in the skin responsible for sensitivity to light touch.

Vitreous Humor

A clear, gel-like substance that fills the space between the lens and the retina of the eye, helping maintain its shape.