Q. Consider the following statements regarding the seismic waves:

Which of the above statements is/are correct?

1 and 2 only

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1, 2 and 3

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2 only

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None of the above

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Solution

The correct option is D None of the above
Explanation:

Statement 1 is incorrect: The velocity of the wave is directly proportional to the density of the material.

Statement 2 is incorrect: The P-waves are similar to sound waves and not Light waves. They travel through gaseous, liquid and solid materials.

Statement 3 is incorrect: P-waves vibrate parallel to the direction of the wave. The direction of vibrations of S-waves is perpendicular to the wave direction in the vertical plane. Further, the speed of the P-wave is faster than the S-wave and hence, the P-wave arrives early at the surface.

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Similar questions

Three statements regarding the propagation of sound waves.

I Sound waves propagate through a series of crests and troughs.

II Sound waves require a material medium for their propagation.

III The propagation of sound waves is attributed to the motion of particles.

Among the given statements,

Q. With reference to seismic waves, which of the following statements is/are correct?

Select the correct answer using the codes given below:

Q. भूकंपीय तरंगों के संदर्भ में, निम्नलिखित कथनों में से कौन सा/से सही है/हैं?

भूकंपीय तरंगें यांत्रिक तरंगें होती हैं।
भूकंपीय तरंगें ठोस और तरल माध्यमों की तुलना में गैसीय माध्यम में तेजी से संचरित होती हैं।
धरातलीय तरंगों में भूगर्भिक तरंगों की तुलना में उच्च आवृत्ति होती है, इसलिए भूकंप आने पर भूगर्भिक तरंगों की तुलना में धरातलीय तरंगे सतह पर पहले पहुंचती हैं।

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