The effective length of a pendulum is related with time period as :

1. T² ∝ l²
2. T³ ∝ l
3. T² ∝ l
4. T ∝ L³

A simple pendulum is made by suspending a bob of mass 1 kg by a string of length l. Now if the length of this pendulum is increased to 4l, then its time period T will :

1. remain the same
2. become twice
3. become four times
4. become half

Time period of a simple pendulum is given by :

1. $T = 2 π \sqrt{\dfrac{g}{l}}$
2. $T = 2 π \sqrt{\dfrac{l}{g}}$
3. $T = 4 π \sqrt{\dfrac{l}{g}}$
4. $T = 4 π \sqrt{\dfrac{g}{l}}$

The time period of a simple pendulum depends on :

1. Length of pendulum
2. Amplitude of oscillation
3. Mass of bob
4. All of the above