An ac voltage source that has a frequency f is connected across the terminals of a capacitor. Which one of the following statements correctly indicates the effect on the capacitive reactance when the frequency is increased to 4f?Prove the answer.
a) The capacitive reactance increases by 4.
b) The capacitive reactance increases by 8
c) The capactive reactance is unchanged
d) The capacitive reactance decreases by 4
e) The capacitive reactance decreases by 8

yup its correct its: c) b b

see earlier answer

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.