(a) Explain the method of testing the speed of a shuttle. (b) During a double match, a player…

(a) Explain the method of testing the speed of a shuttle. (b) During a double match, a player accidently hits the racket of his teammate while returning the shuttle. What will be the decision of the umpire? (c) What will be the decision of the umpire if a player switches his racket from right hand to left hand?