The sound waves travel faster ______.
- Ain liquids
- Bin gases
- Cin solids
- Din vacuum
117 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
MCQ
24 Q→02Assertion (A) & Reason (B) MCQ
5 Q→03[2 Mark Questions]
24 Q→04Match The Following.
4 Q→05[4 Mark Questions]
8 Q→06Fill In The Blanks.
24 Q→07[ 1 mark questions ]
21 Q→08true or false.[1 Mark each]
7 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
seawater
ground glass
dry air
Human blood
Answer: A.
View full solution →A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)
The frequency of a source of sound is 600 Hz. Calculate the numbner of times it vibrates in a minute?
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
| 1. Cochlea | a) Amplification of vibrations |
| 2. Pinna | b) Electrical signals to the brain |
| 3. Ear bones | c) Pressure variations to an electrical signal |
| 4. Auditory nerve | d) Collection of sound |
| Wave | a) Unwanted sound |
| 2. Sound | b) Successive reflections |
| 3. Noise | c) Movement of disturbance |
| 4. Thunder | d) Mechanical wave |
| 1. Stethoscope | a) Repeated reflections |
| 2. Echogram | b) Multiple reflections |
| 3. SONAR | c) Ultrasonic waves |
| 4. Reverberation | d) Speed of underwater objects |
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