An Incident ray traveling in a slower medium strikes a boundary with a faster medium. What happens when its angle of Incidence is greater than the critical angle?
OA.
The refracted ray makes an angle of 90°.
OB.
There is total internal reflection in the faster medium.
OC.
There is total internal reflection in the slower medium.
OD
The reflected ray makes an angle of 90°
OE. The reflected ray makes an angle equal to the critical angle.

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11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage