Question

Match LIST-I with LIST-II
LIST-I
(A) Epicenter
(B) Focus
(C) Mercalli scale
(D) Richter scale
LIST-II
(I) is the scale of measurement of degree of destructiveness of earthquakes
(II) is a point of the origin of the earthquake inside the earth
(III) is the scale to measure the magnitude of the energy released by an earthquake
(IV) is the place on the ground surface which is perpendicular to the hypocenter

• A. A-IV, B-II, C-I, D-III
• B. A-II, B-IV, C-I, D-III
• C. A-IV, B-I, C-III, D-II
• D. A-III, B-IV, C-I, D-II

Hint:

Remember the difference: - Richter = Magnitude (Energy) - A single number for the whole earthquake. - Mercalli = Intensity (Damage) - Varies with location. - Focus = Inside the Earth. - Epicenter = On the Surface.

Answer 1

The Correct Option is A

Step 1: Epicenter (A)
The epicenter is the point on the Earth's surface above where an earthquake starts (focus/hypocenter). Thus, A matches IV.

Step 2: Focus (B)
The focus is the earthquake's origin point, where seismic waves originate within the Earth. Thus, B matches II.

Step 3: Mercalli scale (C)
The Modified Mercalli Intensity (MMI) scale assesses shaking intensity based on observed effects (people's experience and building damage); it measures destructiveness. Thus, C matches I.

Step 4: Richter scale (D)
The Richter scale, a logarithmic scale, measures an earthquake's magnitude, which reflects the energy released at the focus. Thus, D matches III.

Conclusion: The correct matching is A-IV, B-II, C-I, D-III.