Explain how will you measure (i) the size of astronomical object and (ii) the distance of a nearby star.

Explanation

To measure the size of an astronomical object and the distance of a nearby star, we can follow these steps:

### (i) Measuring the Size of an Astronomical Object

1. **Use of Telescopes**: The first step is to utilize a telescope, which allows us to observe distant astronomical objects clearly. Telescopes can gather more light than the human eye, making faint objects visible.

2. **Determine the Angular Size**: When observing an astronomical object, we can determine its angular size (θ) in the sky. This is the angle that the object appears to span from our viewpoint on Earth.

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