Subject :NSO Class : Class 8
Read the given passage and answer the following questions.
An unidentified flying object (UFO) lands on a planet at a point 5 kilometres from an active volcano. Just after the landing, a volcanic eruption occurs. The time interval between the flash of light from the volcanic explosion and the sound of eruption was registered as 100 s. The time
period of the sound waves produced is 2 s.
Which of the following is carried by waves from one
place to another?
AMatter
BMatter and Energy
CWavelength
DEnergy