Physics-Objective Related Question Answers
726. Odometer:?
is an instrument by virtue of which the distance covered by wheeled vehicles is recorded.
727. .....is usually used by the crew of a submarine to survey the ships etc, on the surface of the sea while the submarine is under water. It also enables the sailors to observe objects on the other side of an obstacle without exposing themselves..?
Periscope
728. .....is an instrument used for reproducing sound.?
Phonograph
729. .....is an apparatus used to compare the illuminating power of two sources of light.?
Photometer
730. .....is a glass tube with the aid of which a definite volume of liquid may be transferred.?
Pipette
731. .....is used for comparing the e.m.f.s, of cells, measurements of the thermal e.m.f.s, large potential differences and currents. It is also used for measuring low resistances.?
Potentiometer
732. .....is an instrument for measurement of the humidity of the atmosphere.?
Psychrometer
733. .....is an instrument for recording high temperatures from a great distance (i.e., for recording temperature of the sun etc.) by making use of the laws of radiation.?
Pyrometer
734. ..... is used to detect the direction and range of an approaching aeroplane by means of radio microwaves.?
Radar
735. .....is an apparatus for recording of rainfall at a particular place.?
Rain Gauge
736. .....is an instrument for measuring the emission of radiant energy.?
Radiometer
737. .....is an instrument to measure refractive indices.?
Refractometer
738. .....is an instrument for determining the amount of sugar in a solution. It is used in breweries.?
Saccharimeter
739. .....is an instrument used for recording earthquake shocks.?
Seismometer or Seismograph
740. .....is an instrument invented by John Hadley used for measuring the altitude of the sun and of other inaccessible heavenly bodies.?
Sextant
741. .....is a type of spectroscope suitable for the precise measurements of refractive indices. & An instrument for measuring the energy distribution of a particular type of radiation.?
Spectrometer
742. .....is an instrument which indicates speed at which a vehicle is moving.?
Speedometer
743. .....is an instrument for measuring curvature of surfaces.?
Spherometer
744. .....is an instrument used for measuring arterial blood-pressure.?
Sphygmomanometer
745. .....is an instrument, with the help of which a pulse beat makes a sound.?
Sphygmophone
746. .....is an instrument, by virtue of which, arterial pulsations become visible.?
Sphygmoscope
747. .....is a special type of binocular, through which a double photograph snapped from two different angles by a two-lensed camera is viewed in solid relief.?
Stereoscope
748. .....is an instrument to hear and analyse movements of heart and lungs.?
Stethoscope
749. .....is an instrument for recording small intervals of time in the laboratory, in races and other events.?
Stop watch
750. .....is an instrument for viewing objects moving rapidly with a periodic motion and to see them as if they were at rest.?
Stroboscope
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