An elastic metal rod will change its length when ita) falls vertically under its weight b) is pulled along its length by a force actingat one end c) rotates about an axis at one end d) slides on a rough surface

An elastic metal rod will change its length when ita) falls vertically

1.	An elastic metal rod will change its length when ita) falls vertically under its weight b) is pulled along its length by a force actingat one end c) rotates about an axis at one end d) slides on a rough surface
Answer» only a, B are TRUE only b, C are true only a, d are true All are true ANSWER :B