Physics - Study Mode

[#451] The instrument for measuring intensity of earthquakes is called
Correct Answer

(D) Seismograph

Explanation

Solution: The instrument for measuring intensity of earthquakes is called Seismograph.

[#452] An instrument that records earthquakes is
Correct Answer

(D) Seismograph

Explanation

Solution: An instrument that records earthquakes is Seismograph.

[#453] To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor
Correct Answer

(D) Should be made of a good conductor like copper with sharp-pointed edges

Explanation

Solution: To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor should be made of a good conductor like copper with sharp-pointed edges.

[#454] The number of waves per second in a sound is called ________ of that sound.
Correct Answer

(B) Frequency

Explanation

Solution: The number of waves per second in a sound is called frequency of that sound.

[#455] Sound waves do not show the phenomenon of
Correct Answer

(D) Polarisation

Explanation

Solution: As sound waves are longitudinal waves, they don't exhibit Polarization phenomenon, which is exhibited by the transverse wave only.