Also, the ball travels straight on, as compared to a wrist spin or finger spin stock delivery that breaks to the left or right on impact. A batsman may easily be deceived by the ball, particularly given that the action is quite similar to the stock delivery.
A straight ball is distinguished by its linear trajectory, as opposed to wrist spin or finger spin deliveries that veer off to the left or right upon contact. A batsman may be easily fooled by the ball due to this resemblance to stock delivery.