Spectroscopy Which of the following will oscillate the fastest? A large mass on a weak spring A small mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A large mass on a weak spring A small mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = 2 - log10 %T All are correct A = log10 100 / %T A = log10 1 / T A = 2 - log10 %T All are correct A = log10 100 / %T A = log10 1 / T ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? Because %T cannot be measured as accurately as absorbance Because %T is dependant on the power of the incident radiation None of these Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance Because %T is dependant on the power of the incident radiation None of these Because absorbance is proportional to the concentration of the analyte, whereas %T is not ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy A simple harmonic oscillator may absorb energy at no time. when the frequencies match exactly at anytime. when the amplitudes are the same. at no time. when the frequencies match exactly at anytime. when the amplitudes are the same. ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → π* and π → π* n → σ* σ → σ* none of these n → π* and π → π* n → σ* σ → σ* none of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The diffraction grating The entrance slit None of these The collimating lens The diffraction grating The entrance slit None of these The collimating lens ANSWER DOWNLOAD EXAMIANS APP
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