20 An alpha particle enters a hollow tube of 4 m length with

Last updated: 6/9/2023

20 An alpha particle enters a hollow tube of 4 m length with an initial speed of 1 km s It is accelerated in the tube and comes out of it with a speed of 9 km s The time for which it remains inside the tube is a 8x10 s c 800x10 s b 80x10 d 8x10