The aperture of a telescope is made large, because

Options

A. increase the intensity of the image
B. decrease the intensity of image
C. have greater magnification
D. have lesser resolution

Explanation

To solve the question regarding why the aperture of a telescope is made large, we can follow these steps:

### Step 1: Understand the concept of aperture
The aperture of a telescope refers to the diameter of the main optical element, which can be either a lens or a mirror. A larger aperture allows more light to enter the telescope.

**Hint:** Remember that the aperture size directly affects the amount of light that can be collected by the telescope.

### Step 2: Analyze the effects of a large aperture
When the aperture is larger, it allows more light to enter, which increases the brightness of the image. This is crucial for observing faint objects in the sky.

**Hint:** Consider how light intensity is related to the size of the aperture.

### Step 3: Consider the options given
The options provided are:
1. Increase in density of the image
2. Decrease in density of the image
3. To have greater magnification
4. To have lesser resolution

Among these options, we need to identify which one is directly related to the benefits of a larger aperture.

**Hint:** Think about how brightness and clarity of an image relate to the options provided.

### Step 4: Identify the correct answer
A larger aperture increases the amount of light collected, which results in a brighter image. This corresponds to the option that states "increase in density of the image," as a brighter image can be interpreted as having greater intensity.

**Hint:** Focus on the relationship between light collection and image brightness.

### Final Answer
The aperture of a telescope is made large to **increase the intensity of the image**.