Which of the following statements is true about the critical angle for total int
Practice Questions
Q1
Which of the following statements is true about the critical angle for total internal reflection? (2020)
It is always less than 90 degrees
It is always greater than 90 degrees
It is equal to 90 degrees
It depends on the medium
Questions & Step-by-Step Solutions
Which of the following statements is true about the critical angle for total internal reflection? (2020)
Step 1: Understand what the critical angle is. It is the angle at which light cannot pass through a boundary and instead reflects back into the original medium.
Step 2: Remember that this angle is measured from the normal line, which is an imaginary line perpendicular to the surface at the point of incidence.
Step 3: Know that the critical angle occurs when light travels from a denser medium (like water) to a less dense medium (like air).
Step 4: Recognize that the critical angle is always less than 90 degrees, meaning it cannot reach or exceed a right angle.
