Science Physics MCQ-166

General Science-Physics Practice Questions for NDA, CDS, DelhiPolice, UPSC, CivilsPrelims, UPPSC, SSC, RBI Exams

The element used in an electric filament is


The molecular weight of a subtance can be calculated by measuring


Mercury is commonly used as a thermometric fluid rather than water because


When a stone is dropped in a well, the splash is heard after 5 seconds after the stone hits the water surface. If the velocity of sound is 327 m/ s, the depth of the well is


A magnetic field does not interact with


The critical angle of a glass slab increases with


Cosmic rays


Rectifiers are used to convert


The terminal colours of the rainbow are


Rate of evaporation does not depend upon


The best conductor of electricity is


The normal boiling point of a liquid is the temperature at which


The shining particles seen in the path of beam from a projector in cinema hall is due to


What happens to the equivalent conductance of an electrolyte on dilution?


Choke is used to


Piezo-electric effect is exhibited by


The substance used in the manufacture of high voltage insulators is


”Decibel” is a unit of


Ball-point pen works on the principle of


At what temperature a body will not radiate any heat energy?


The power of a convex lens having a focal length 25 cm will be


A telescope and a microscope differ in that


The centre of the Newton’s rings pattern is dark, since


Galvanometer can be converted into a Voltmeter by using


The apparatus used in submarines to give a clear view of the objects on the surface of the ocean or ground is known as