Q.11)-Sound cannot pass through
- Water
- Steel
- Air
- Vaccum
Q.12)-In which of the following speed of sound is maximum?
- Steel
- Air
- Vaccum
- Water
Q.13)-In which of the following medium speed of sound will be comparatively high?
- Carbon dioxide
- Iron rod
- Steam
- Water
Q.14)-Pitch of a sound depends upon its
- Frequency
- Intensity
- Velocity
- Amplitude
Q.15)-Which of the following character of sound wave change with the change in temperature in atmosphere.
- Frequency
- Amplitude
- Wavelength
- Intensity
Q.16)-Which phenomenon do bat or dolphins used to find prey, preators or obstacles?
- Refraction of sound
- Formation of beats
- Scattering of sound
- Echolocation
Q.17)-When a vibrating tuning fork is placed on table, a loud sound is heard. This is due to
- Reflection
- Refraction
- Forced vibration
- Damped vibration
Q.18)-Sound waves do not exhibit the phenomenon of
- Interference
- Diffraction
- Refraction
- Polarisation
Q.19)-Sound waves cannot be polarised because they
- Require a material medium for propagation
- Are longitudinal
- Are tranverse
- Have low velocity
Q.20)-The velocity of sound in a gas depends on
- Wavelength only
- Density and elasticity of gas
- Intenstiy only
- Amplitude and frequency