# Physics Multiple choice questions Quiz pdf For odisha exam !!! set-5

Welcome to digital odisha, here we discuss some physics multiple choice questions quiz for odisha exam , which help to your all odisha and competitive exam. physics objective questions pdf, physics objective questions quiz odia

## Physics gk quiz for odisha exam :

201. Sound waves in air are
(a) transverse
(b) longitudinal
(c) transverse and longitudinal
(d) neither transverse nor longitudinal

(b) longitudinal

202. The speed of sound in air at 0° C is approximately
(a) 4 x 108 m/s
(b) 1500 m/s
(c) 330 m/s
(d) 500 m/s

(c) 330 m/s

203. Under similar conditions of temperature and pressure, the velocity of sound is maximum in
(a) helium
(b) argon
(c) hydrogen
(d) oxygen

(c) hydrogen

204. The characteristics of a musical note are
(a) loudness
(b) pitch
(c) quality or timbre
(d) All the above

(d) All the above

205. The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
(a) the ringing is not loud enough
(b) the glass of the bell jar absorbs the sound waves
(c) the bell jar is too small
(d) there is no air or -any other gas in the bell jar

(d) there is no air or -any other gas in the bell jar

206. The speed of sound in a medium depends upon the properties of the medium such as
(a) its density
(b) its temperature
(c) its elasticity
(d) All the above

(d) All the above

207. When we tighten the string of a sitar or tanpura its pitch
(a) remains the same
(b) increases
(c) decreases
(d) None of the above

(b) increases

208. The frequency of an ultrasonic wave is
(a) the same as that of an audible sound
(b) above the audible range
(c) below the audible range
(d) None of the above

(b) above the audible range

209. The audible range of a normal human ear is frequencies ranging from
(a) 10000 to 20000 Hz
(b) 50 to 15000 Hz
(c) 20 to 20000 Hz
(d) 15 to 50000 Hz

(c) 20 to 20000 Hz

210. The maximum displacement of the particle in a mechanical wave motion is known as
(a) amplitude
(b) vibration
(c) frequency
(d) phase

(a) amplitude

211. The device used to record the sound is
(a) a microphone
(c) a phonograph
(d) an amplifier

(a) a microphone

212. One can be recognised by his voice alone due to the factor of
(a) quality
(b) amplitude
(c) pitch
(d) loudness

(a) quality

213. A timer in a race is at the finish line. He should start his stop watch
(a) as soon as he hears the report of the gun
(b) the moment he sees the flash
(c) either (a) or
(b) since that makes no difference
(d) None of the above

(b) the moment he sees the flash

214. Echoes are produced by
(a) the reflection of sound waves
(b) the refraction of sound waves
(c) the interference of sound waves
(d) reverberation of sound waves

(a) the reflection of sound waves

215. The stem of a vibrating tuning fork is pressed against a sound box. Then
(a) the loudness of the sound increases
(b) the loudness remains the same
(c) the loudness decreases
(d) the sound suddenly stops

(a) the loudness of the sound increases

216. We see the flash of lightning before hearing the thunder because
(a) light travels very much faster than sound
(b) sound travels faster than light
(c) lightning occurs nearer than thunder
(d) both travel at the same speed

(a) light travels very much faster than sound

217. Sound waves
(a) are electromagnetic waves
(b) can easily pass through vacuum
(c) are always transverse waves
(d) require a material medium for propagation

(a) are electromagnetic waves

218. While crossing a suspension bridge, the soldiers are ordered to break steps because
(a) the marching in steps will involve a big strain on them
(b) the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions
(c) the marching may obstruct other traffic
(d) rumblings of their marching may disturb the surroundings

(b) the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions