What is critical angle of refractive index is 1.5
The critical angle is a term used in the field of optics and specifically in the study of the refraction of light. It refers to the angle of incidence at which light traveling in a more optically dense medium, such as water or glass, strikes the boundary of a less optically dense medium, such as air, at an angle that causes the refracted ray to travel along the boundary, rather than crossing it.
To calculate the critical angle, we need to know the refractive index of the two media involved. The refractive index (n) is a property of a medium that describes how much the speed of light is reduced when it passes through that medium. The formula for calculating the critical angle is:
Critical angle (θc) = arcsin (1/n)
In this case, you mentioned a refractive index of 1.5. Assuming this value refers to the refractive index of the more optically dense medium (let's say glass or water), we can plug it into the formula:
θc = arcsin (1/1.5)
To find the critical angle, use a scientific calculator or an online calculator that can handle trigonometric functions. Enter the value "1/1.5" into the "arcsin" function and evaluate it. The result will give you the critical angle.
In air?
theta=arcSin 1/1.5