Which of the statements given below regarding national symbols is not correct?
1. The ratio of width and length of the national flag of India is 2 ∶ 3.
2. In the wheel of the national flag, the number of sticks are 24.
3. The national emblem Lauria is derived from the Lion-head of Nandgarh.
4. The full official duration of playing the national tune is 52 seconds.