Science Physics MCQ-175

General Science-Physics Online Practice Exam UPSC, CivilsPrelims, SSC, RBI, CDS, NDA, DelhiPolice, UPPSC Exams

The best conductor of heat among the following is


Metal tea pots have wooden handles because


White clothes are cooler than black ones because they


Water is used in hot water bags because


An instrument used to measure humidity is


At upper atmosphere, an astronaut feels


Which of the following is the example of ideal black body


The wavelength of the radiation emitted by a body depends upon


The temperature of water at the bottom of a water f all is higher than that at the top because


The energy that can harness heat stored below the earth’s surface is known as :


The temperature of boiling water in a steam engine may be high because :


Mechanical waves


Transverse waves can propagate


Choose the correct statement


The graph between L and T is correctly shown by


The period of pendulum depends upon


A pendulum suspended from the ceiling of a train has a time period T when the train is at rest. When the train is accelerating with a uniform acceleration, the time period will


The relation between T and g is given by


If a pendulum is allowed to oscillate into jar containing water, its time period will


If the mass of the pendulum is doubled, the time period


When the bob is central position the forces are


The phenomenon in which the amplitude of oscillation of pendulum decreases gradually is called


The length of the pendulum is doubled and the mass of its bob is halved. Its time period would


A pendulum having period of oscillation of 2 s is taken on a planet where g is four times that on earth. The period of the pendulum would be


The product of the time period of a wave and its frequency is