UPSC CSE Prelims
Question 61
Tides occur in the oceans and seas due to which among the following?
- Gravitational force of the Sun
- Gravitational force of the Moon
- Centrifugal force of the Earth
Select the correct answer using the code given below.
View correct answer and explanation
Correct answer: D
Correct Option: D
Explanation: Ocean tides arise from the differential gravitational attraction of the Moon and Sun together with the inertial/centrifugal effect of the Earth–Moon system.
Statement/Pair-wise Analysis:
Statement/Item 1: Correct - Solar gravitational attraction contributes to tides and spring-neap differences.
Statement/Item 2: Correct - The Moon supplies the dominant differential gravitational tide-generating force.
Statement/Item 3: Correct - The inertial or centrifugal component of Earth’s motion about the Earth–Moon barycentre is part of the standard tide explanation.
Option-wise Analysis:
A: Incorrect - omits correct statement/items 2, 3.
B: Incorrect - omits correct statement/item 1.
C: Incorrect - omits correct statement/item 2.
D: Correct - includes all and only the correct items.