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Question
In the above-given image which of the following part is used to get 100% transmittance?
In the above-given image which of the following part is used to get 100% transmittance?
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Solution
The correct option is B Zero control
Photoelectric colorimeter uses a photocell, color filters, amplifiers and current detector. This device is used to measure the concentration of specific substance in a given solution. Its working is based on Beer-Lambert law. The zero control knob enables the pointer to be brought to its zero position at the line of the pointer scale when the Colorimeter lamp is on. The output from a colorimeter is displayed by this zero control knob. It is shown as transmittance (a linear scale from 0-100%) or as absorbance (a logarithmic scale from zero to infinity). It is used to get 100% transmittance. Thus the correct answer is 'Zero control'.
Photoelectric colorimeter uses a photocell, color filters, amplifiers and current detector. This device is used to measure the concentration of specific substance in a given solution. Its working is based on Beer-Lambert law. The zero control knob enables the pointer to be brought to its zero position at the line of the pointer scale when the Colorimeter lamp is on. The output from a colorimeter is displayed by this zero control knob. It is shown as transmittance (a linear scale from 0-100%) or as absorbance (a logarithmic scale from zero to infinity). It is used to get 100% transmittance. Thus the correct answer is 'Zero control'.
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