By what factor will the acceleration of an object change its mass stays constant but the force acting on it triples

lacceleration is given by

a=F/m

With force acting on the object remained constant ,the acceleration is inversly proportional to mass of the object i.e with increase in mass =>acceleration decreases and with decrease in mass => acceleration increases.

a)

acceleration decreases

b)

acceleration increase

real, smaller and upside-down.   so the answer should be b.

wavelength divides in half and speed stays the same.