Question : Which of these waves can be polarised?

Option 1: Sound waves in the air

Option 2: Longitudinal waves on a string

Option 3: Transverse waves on a string

Option 4: Light waves

Question : If the density of oxygen is 16 times that of hydrogen, what will be their corresponding ratio to the velocity of sound?

Option 1: 4:1

Option 2: 2:1

Option 3: 1:16

Option 4: 1:4

Question : Which of the following properties of sound is affected by a change in air temperature?

Option 1: Frequency

Option 2: Intensity

Option 3: Amplitude

Option 4: Wavelength

Question : Conversion of sound energy into electrical energy is done by:

Option 1: Solar cell

Option 2: Gramophone

Option 3: Microphone

Option 4: Loudspeaker

Question : The sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.

A. Despite numerous setbacks and rejections, he refused to give up on his dream of making it big.
B. John had always been a talented musician, but he struggled to find his place in the competitive and cutthroat music industry.
C. With the help of a supportive community of fellow musicians and fans, John continued to hone his craft and develop his own unique sound.
D. Eventually, his hard work paid off and he landed a record deal with a major label.

Option 1: BACD

Option 2: DCAB

Option 3: BDAC

Option 4: CBAD