The width of a spectral line of wavelength 300 nm is measured as 0.01 nm. What is the average time that the system remains in the corresponding energy state? 0.47 second 4.7 picosecond 0.15 femtosecond 0.015 millisecond
The width of a spectral line of wavelength 300 nm is measured as 0.01 nm. What is the average time that the system remains in the corresponding energy state? 0.47 second 4.7 picosecond 0.15 femtosecond 0.015 millisecond
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The width of a spectral line of wavelength 300 nm is measured as 0.01 nm. What is the average time that the system remains in the corresponding
energy state?
0.47 second
4.7 picosecond
0.15 femtosecond
0.015 millisecond
axis
A disk of mass m and radius R, which is wound with a rope hanging from the ceiling.
starts to roll own. The linear velocity of the ball when it has rolled 5 m down can be
expressed as v =√√ (square root of a/b) where a and b are the smallest possible
integers. Find the value of a+b.
203
200
Cannot calculate without values of m and R
201
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