Spectroscopy
A simple harmonic oscillator may absorb energy

at no time.
at anytime.
when the amplitudes are the same.
when the frequencies match exactly

ANSWER DOWNLOAD EXAMIANS APP

Spectroscopy
Why must the voltage supplied to a tungsten lamp be very stable?

Because the lamp will only function at a specific voltage
Because if it wasn't, the lamp would bum out
Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage
All of these

ANSWER DOWNLOAD EXAMIANS APP

Spectroscopy
Why are rotational transitions of little use to a spectroscopist?

All of these
Because rotational transitions are extremely rare
Because the energy required to induce a rotational transition is so small that it cannot be measured
Because, in liquids and solids, spectral lines corresponding to rotational transitions are broadened as the result of molecular collisions and other interactions

ANSWER DOWNLOAD EXAMIANS APP

Spectroscopy
Vibrational spectroscopy is

a flashlight through a prism and shake it
a large mass on a weak spring
a class of spectroscopic techniques which analyzes molecular motions
an Infrared spectroscopy

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Spectroscopy