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