Question

How does a Sundial work ?

• A. The changing position of moon in the sky casts a shadow at different places marked on the sundial which tells the time of the day.
• B. The changing position of sun in the sky casts a shadow at different places marked on the sundial which tells the time of the day.
• C. The changing position of Pole star in the sky casts a shadow at different places marked on the sundial which tells the time of the day.
• D. None of the above

Answer 1

The correct option is B The changing position of sun in the sky casts a shadow at different places marked on the sundial which tells the time of the day.

The position of the sun changing continuously with time casts a shadow at different places marked on the sundial. This shadow tells us the time of the day and thus, in this way, we can measure time using Sundial.