MCQ practice · SSC Bangladesh and Global Studies Board questions · Chapter 3: The Solar System and the Earth
The Sun shines vertically on the equator-
- i. 21 March
- ii. 21 June
- iii. 23 September
Think it through first, then pick an option.
- a i and ii
- b i and iii
- c ii and iii
- d i, ii and iii
Answer and explanation
Correct answer: b i and iii
On 21 March and 23 September the rays fall vertically (at 90°) on the equator and day and night are equal.
Why the other options are wrong
- a i and ii: ii is false: on 21 June the rays fall vertically on the Tropic of Cancer, not the equator.
- c ii and iii: This leaves out i and includes the false ii: on 21 March too the Sun is vertical on the equator; on 21 June it is not.
- d i, ii and iii: ii is false: on 21 June the Sun is vertical on the Tropic of Cancer, so not all three are true.
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