(A) : A helicopter must necessarity have two propellers. (R) : Two propellers are provide in helocopter in order to conserve inear momentum.

(A) : A helicopter must necessarity have two propellers. (R) : Two pr

1.	(A) : A helicopter must necessarity have two propellers. (R) : Two propellers are provide in helocopter in order to conserve inear momentum.
Answer» Both 'A' and 'R' are TRUE 'R' is the CORRECT EXPLANATION of 'A' Both 'A' and 'R' are true 'R' is not the correct explanation of 'A' A' is true and 'R' is FALSE A' is false and 'R' are true Answer :C