The velocity of sound is greatest in:
A. Water
B. air
C. copper
D. ammonia
Velocity of sound in vacuum is:
A. 332 ms-1
B. 320 ms-1
C. Zero
D. 224 ms-1
According to Newton sound travel in air under the conditions of:
A. adiabatic
B. isothermal
C. isobaric
D. isochoric
On loading the prong of a tuning form with wax its frequency:
A. increases
B. decreases
C. remains unchanged
D. may increase or decrease
Increase in velocity of sound in the air for 1°C rise in temperature is:
A. 1.61 ms-1
B. 61.0 ms-1
C. 0.61 ms-1
D. 2.00 ms-1
Sound waves do not travel in vacuum because:
A. they are transverse waves
B. they are stationary waves
C. they require material medium for propagation
D. they do not have enough energy
If stretching force T of wire increases, then its frequency:
A. decreases
B. increases
C. remains the same
D. any of above
The waves that require a material medium for their propagation are called:
A. matter waves
B. electromagnetic waves
C. carrier waves
D. mechanical waves
The speed of stationary waves in a stretched string are independent of:
A. Number of loops
B. Tension in the string
C. Point where string is plucked
D. both A and C
The speed of sound in hydrogen is _______time than that in oxygen:
A. Two times
B. Three times
C. Four time
D. Six time
