Consider the following statements: 1. In a seismograph, P waves recorded earlier than S waves. 2. In P waves, the individual particles vibrate to and fro in the direction of wave propagation whereas in S waves, the particles vibrate up and down at right angles to the direction of wave propagation. Which of the statements given above is/are correct?

Consider: I. In a seismograph, P waves are recorded earlier than S waves. II. In P waves, particles vibrate to and fro in the direction of wave propagation; in S waves, particles vibrate up and down…

Consider the following statements with reference to Secondary waves (S-Waves) generated during an earthquake : 1. They create troughs and crests in the material through which they pass. 2. The direct…

Consider the following statements : 1. The Richter scale is a logarithmic scale and so an increase of 1 magnitude unit represents a factor of 10 in amplitude. 2. Each integer reading of the Richter s…

Consider the following statements about the types of drought in India: 1. A meteorological drought occurs when the mean annual rainfall is less than 75%. 2. Agricultural drought arises out of extreme…

Which of the following statements with reference to shadow zones in an event of an earthquake is/are correct? 1. Zone between 105° and 145° from epicentre was identified as the shadow zone for both P…