A 10-Kg Block Oscillates with a Frequency of 10 Hz at at the End

Multiple Choice

A 1.0-kg block oscillates with a frequency of 10 Hz at the end of a certain spring. The spring is then cut into two halves. The 1.0-kg block is then made to oscillate at the end of one of the halves. What is the frequency of oscillation of the block?

A) 5 Hz
B) 10 Hz
C) 14 Hz
D) 20 Hz
E) 40 Hz