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  1. What is Total Internal Reflection? - BYJU'S

    This particular angle of incidence is called the critical angle. Here the angle of refraction is 90 degrees. When the angle of incidence is greater than the critical angle, the incident ray is …

  2. BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC ...

    Critical Angle can be described as the angle of incidence that offers an angle of refraction of 90 degrees. Remember that the critical angle is defined as an angle of incidence value. The …

  3. Critical Angle And Refractive Index - BYJU'S

    In Optics, The angle of incidence to which the angle of refraction is 90° is called the critical angle. The ratio of velocities of a light ray in the air to the given medium is a refractive index. Thus, …

  4. What is Brewster’s Law? - BYJU'S

    The law states that the p-polarized rays vanish completely on different glasses at a particular angle. Further, the polarization angle is also called Brewster’s angle. It is an angle of incidence …

  5. What is radio wave propagation? - BYJU'S

    Where, f c: critical frequency in Hz MUF: maximum usable frequency Ө: angle of incidence Critical frequency varies depending upon atmospheric conditions, time of the day and the angle of fire …

  6. BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC ...

    What is an electromagnetic wave? Define critical angle. What is the formula to find the critical angle? State true or false: The angle of incidence must be greater than the critical angle for a …

  7. Key Pointers - BYJU'S

    In total internal reflection, when the angle of incidence is equal to the critical angle, what will be the value of the angle of reflection?

  8. BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC ...

    If the critical angle for water- air surface is 48°, complete the ray diagram showing the refracted rays for each. State conditions when the ray will suffer total internal reflection.

  9. BYJU'S Online learning Programs For K3, K10, K12, NEET, JEE, UPSC ...

    The bending of the light is dependent on the angle of incidence, normal, and refractive indices. There are four different types of angles involved in this experiment, and they are the angle of …

  10. Formation of Rainbow - BYJU'S

    4. What is the critical angle of a rainbow? 20 degrees 30 degrees 35 degrees 48 degrees Answer: d) 48 degrees Explanation: The critical angle of a rainbow is 48 degrees. 5. Fill in the blanks: …