Total internal reflection occurs when light travels from

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A. A denser medium to a rarer medium
B. A rarer medium to a denser medium
C. A rarer medium to a denser medium and the angle of incidence is less than the critical angle
D. A rarer medium to a denser medium and the angle of incidence is greater than the critical angle

Answer

Answer

A. A denser medium to a rarer medium

Submitted by: Toheed Ahmed

Reynolds number is significant in____________________?

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A. supersonics, as with projectile and jet propulsion
B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
D. all of the above
E. none of the above

Answer

Answer

B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

Submitted by: Engr. Abdul Hafeez

Froude number is significant in____________________?

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A. supersonics, as with projectile and jet propulsion
B. full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
D. all of the above
E. none of the above

Answer

Answer

C. simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

Submitted by: Engr. Abdul Hafeez

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