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Mdcat-past-papers Quiz

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1101. In moist air (humidity), the speed of sound waves:



1102. The temperature of air is increased 1°C then increase in speed of sound is:



1103. The speed of sound in a medium containing ideal gas is NOT dependent on?



1104. The speed of sound in air is 332m/s. The speed of sound at 22°C will be:



1105. Speed of sound does not depend upon:



1106. In ripple tank 40 waves pass through a certain point in one second. If the wavelength of the waves is 5cm, then find the speed of wave



1107. The speed of sound is 332ms⁻¹ at 0°C. The speed at 10°C will be



1108. Loudness of sound is directly related to:



1109. The increase in speed of sound in air for each degree rise above 0°C is:



1110. The speed of sound in air does not depend on:



1111. A metallic wire of length 2m hooked between two points has tension 10N. If mass per unit length is 0.004kg/m, then fundamental frequency emitted by wire on vibration is:



1112. Which one of the following is INCORRECT about the nodes when the string is plucked:



1113. Which one of the following does not cause stationary waves?



1114. Two transverse travelling waves are presented by these equations. y₁ = A₀sin(Kx−ωt) and y₂ = A₀sin(kx−ωt−Ø). These two waves differ in:



1115. Longitudinal waves exhibit:



1116. If the fundamental frequency of vibration of a string fixed at both ends is 50Hz, the fourth harmonic will be:



1117. In standing waves, the distance between two consecutive nodes or anti-nodes is:



1118. Effective distance for echo is:



1119. There are 2 pianos playing the same note. One has a frequency of 223.20Hz and the other 223.50Hz. The beat frequency between them will be:



1120. What happens when two waves of the same frequency and amplitude meet in phase?