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: Analyze Epicenter (A)
The focus (or hypocenter) is the point within the Earth where an earthquake rupture starts. The epicenter is the point on the Earth's surface directly above the focus. Thus, A matches with (IV).

Step 2: Analyze Focus (B)
The focus is the location where the earthquake begins. It's the origin point of the seismic waves inside the Earth. Thus, B matches with (II).

Step 3: Analyze Mercalli scale (C)
The Modified Mercalli Intensity (MMI) scale measures the intensity of shaking based on observed effects, such as how people felt the earthquake and the extent of damage to buildings. It measures destructiveness. Thus, C matches with (I).

Step 4: Analyze Richter scale (D)
The Richter scale is a logarithmic scale that measures the earthquake's magnitude, which is a measure of the energy released at the source (focus). Thus, D matches with (III). Conclusion: The correct matching is A-IV, B-II, C-I, D-III.