Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NDA2023General AbilityGeneral StudiesActual

Which of the following statements is/are correct? 1. Hypocenter is the point on the surface of the Earth, nearest to the focus. 2. Velocity of earthquake waves is higher in denser materials. 3. P waves move faster and are the first to arrive at the surface of the Earth. Select the correct answer using the code given below :

Options

  1. A1 a 2
  2. B2 and 3
  3. C1 and 3
  4. D3 only

Correct answer

B. 2 and 3

Step-by-step solution

The subsurface location (focus) at which the energy of an earthquake is released is known as hypocentre. Earthquakes generally occur at depths less than about 30 km . P waves are the fastest body waves and arrive at stations before the S waves, or secondary waves. Their velocity in the crust varies between 5.0 and 7.0 ~km / s . Seismic waves move more slowly through a liquid than a solid. Molten areas within the Earth slow down P waves and stop S waves because their shearing motion cannot be transmitted through a l

Practice General Studies on Quantrex Academy →

More from General Studies

Consider the following statements regarding extratropical cyclones: I. They usually develop in the mid and high latitudes. II. They affect a much larger area as compared to tropica 2026Loose sediments are transformed into sedimentary rocks by the process of 2026Consider the following statements: I. Earthquake waves are basically of two types, namely body waves and surface waves. II. The body waves interact with the surface rocks and gener 2026Which one of the following is not a strategy in the Rainfed Area Development (RAD) scheme of India? 2026As per the land-use categories in the Land Revenue Records of India, 'a cultivable land which is left uncultivated for more than a year but less than 5 years' is called 2026Consider the following statements about temperature inversion: I. This happens when normal lapse rate gets inverted. II. Winter nights with cloudy skies are conducive for temperatu 2026Consider the following pairs: Types of Chemical Weathering Characteristics I. Solution Results in leaching of minerals II. Carbonation Helps in breaking down feldspars III. Hydrati 2026Consider the following statements: I. In a seismograph, P waves are recorded earlier than S waves. II. In P waves, the individual particles vibrate to and fro in the direction of w 2026 Full General Studies list All NDA PYQs