How Long Does It Take Light to Travel Across the Width

question 34

Multiple Choice

How long does it take light to travel across the width of a Pb nucleus of radius 7.1 fm?

• A) 2.4 × 10^-23 s
• B) 1.2 × 10^-23 s
• C) 2.4 × 10^-20 s
• D) 4.7 × 10^-23 s
• E) None of the above.