Physics-Objective Related Question Answers
776. Unit of force?
Newton
777. Unit of Electric resistance?
Ohm What is the use of Barometer?
778. The unit which is used to calculate the distance between the Galaxy?
parsec (Parallactic second)
779. The largest unit of distance?
parsec (1parsec= 3×1013km)
780. Electric power is measured by?
Watt
781. SI unit of temperature?
Kelvin
782. Unit of luminous intensity is?
Candela
783. The SI unit of wavelength of light is?
Angstrom
784. The unit used to measure the depth of the sea is?
Fathom One fathom = 6 feet
785. The unit of distance in astronomy is?
Light year
786. The Unit of power of lens is?
Dioptre
787. Which instrument converts mechanical energy into electrical energy?
Dynamo
788. Which instrument converts light energy into electric energy?
Photo electric cell
789. Which instrument used to convert A.C. current to D.C. current?
Rectifier
790. Which is the instrument employed to change the voltage in an electric circuit?
Transformer
791. What is the use of Altimeter?
To measure the altitude
792. What is the use of Ammeter?
To measure the flow of electric current in a circuit
793. What is the use of Anemometer?
To measure the force or speed of the wind
794. What is the use of Electroscope?
To measure the electrostatic charge
795. What is the use of Calorimeter?
To measure the amount of heat
796. What is the use of Speedometer?
To indicate the speed of a vehicle
797. What is the use of Fathometer?
To measure the depth of water (1 fathom = 6 ft)
798. What is the use of Periscope?
To observe objects of the surface from the submarine
799. What is the purpose of Mariner’s compass?
To find out the direction of the ship in the sea
800. What is the use of Steroscope?
To see the photos taken by two cameras placed at two different angles
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