Question : Which instrument is used for photographing the Sun?
Option 1: Galvanometer
Option 2: Potentiometer
Option 3: Spectrophotometer
Option 4: Spectroheliograph
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Correct Answer: Spectroheliograph
Solution : The correct option is a Spectroheliograph.
The spectroheliograph is an astronomical apparatus that takes a monochromatic photo of the Sun at a single wavelength of light. Typically, the wavelength is selected to match the spectral wavelength of a chemical element in the Sun. The quantity of photons (the intensity of light) absorbed after passing through a sample solution is measured by a spectrophotometer.
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Question : The instrument used for measuring air pressure is called
Option 1: Anemometer
Option 2: Barometer
Option 3: Hygrometer
Option 4: Thermometer
Question : Sextant is an instrument used in which of the following?
Option 1: Gynaecology
Option 2: Navigation
Option 3: Birth control
Option 4: Medical Treatment
Question : What is the name of the device used to convert alternating current into direct current?
Option 1: Ammeter
Option 2: Galvanometer
Option 3: Rectifier
Option 4: Transformer
Question : The growth of Bacteria is measured by which of the following?
Option 1: Hemocytometer
Option 2: Spectrophotometer
Option 3: Calorimeter
Option 4: Auxanometer
Question : What is an endoscope ?
Option 1: It is an optical instrument used to see inside the alimentary canal
Option 2: It is a device which is fitted on the chest of the patient to regularise the irregular heart beats
Option 3: It is an instrument used for examining ear disorders
Option 4: It is an instrument for recording electrical signals produced by human muscles
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