Question:
A fish rising vertically upward with a uniform velocity of 8 ms^-1, observes that a bird is diving vertically downward towards the fish with the
velocity of 12 ms^-1. If the refractive index of water is 4/3 , then the actual velocity of the diving bird to pick the fish, will be __________ ms^-1 .
                                                                     JEE-2024   
Solution:                
A fish rising vertically upward with a uniform velocity of 8 ms^-1, observes that a bird is diving vertically downward towards the fish with the velocity of 12 ms^-1. If the refractive index of water is 4/3 , then the actual velocity of the diving bird to pick the fish, will be __________ ms^-1 . JEE-2024

Bhautik Study is a branch of knowledge that offers comprehensive solutions to a wide range of questions, aiding in preparation for exams such as JEE, NEET, CUET and NDA. 

The magnetic field at the centre of a wire loop formed by two semi circular wires of radii R1 = 2 πm and R2 = 4π m carrying current I = 4A as per figure  given below is  a × 10^–7 T. The value of a is  ______. (Centre O is common for all segments)           

                                                                      JEE-2024