Assertion :The SA node acts as pacemaker Reason: The SA node is located in the wall of the right atrium near the interatrial septum.
Statement 1: If two figures A and B are congruent, then they must have equal area.
Statement 2: If two figures A and B have equal area, then they must be congruent.
Statement1: In absence of air, projectile motion is always a 2D motion. Statement2: In absence of any external force in 3D space, at any time during its flight Projectile's velocity has only two components.