GENERAL KNOWLEDGE

GK

UNITS DEVICES DIMENSIONS AND MEASUREMENTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which instrument is used to measure the height of very distant objects and also used by navigators to find the latitude?
A
Sextant
B
Spherometer
C
Spectroscope
D
Spectrometer
Explanation: 

Detailed explanation-1: -Sextant contains two mirrors which are arranged in such a way that the observer can sight both the objects at the same time. Thus a sextant is a doubly reflecting navigation instrument used to measure altitude or the angle between any two visible objects.

Detailed explanation-2: -Scale hypsometer Modern hypsometers use a combination of laser rangefinder and clinometer to measure distances to the top and bottom of objects, and the angle between the lines from the observer to each to calculate height.

Detailed explanation-3: -An altimeter is a device that measures altitude, the distance of a point above sea level.

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