JEE Main Physics question
If the kinetic energy of a body becomes four times its initial value, then new momentum will [AIIMS 1998, K CET 2002, J&K CET 2000, J&K CET 2004]
Answer: (A)
Solution
p = √(2mE), so p ∝ √E. If E becomes 4 times, p becomes √4 = 2 times.