GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 021

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 021

201). When a wave goes from one place to another, it transports
A). matter
B). energy
C). mass
D). nothing

Answer: energy


   
202). The pitch (or shrillness) of a sound is determined by its
A). Speed
B). amplitude
C). frequency
D). loudness

Answer: frequency


   
203). A woman's voice is shriller than a man's due to
A). higher frequency
B). higher amplitude
C). lower frequency
D). weak vocal chords

Answer: higher frequency

   
204). The loudness of a sound wave is determined by its
A). amplitude
B). frequency
C). wavelength
D). Speed

Answer: amplitude


   
205). Sound travels at maximum speed in
A). vacuum
B). air
C). water
D). steel

Answer: steel



206). Sounds cannot travel through
A). vacuum
B). hydrogen gas
C). water
D). steel

Answer: vacuum


   
207). The speed of sound will be highest in
A). dry air at 0 degree C
B). dry air at 30cc
C). humid air at 0 degree C
D). humid air at 30 degree C

Answer: humid air at 30 degree C


   
208). Thunder is heard much after a flash of lightning is seen because
A). thunder is produced much later
B). clouds obstruct sound waves
C). light can travel through vacuum but sound cannot
D). light travels much faster than sound

Answer: light travels much faster than sound


   
209). Mach number is used in connection with the speed of
A). sound
B). ships
C). aircraft
D). Spacecraft

Answer: aircraft


   
210). Echoes are produced due to
A). reflection of sound
B). refraction of sound
C). diffraction of sound
D). polarization of sound

Answer: reflection of sound