## What is the formula for converging lens?

According to the Convex Lens equation, 1/f = 1/v + 1/u. It relates the Focal Length of a Lens with the distance of an object placed in front of it and the image formed of that object.

## What is the formula for image size?

Multiply the width and height of the image, in pixels, to get the total pixel count. 2. Multiply the total pixel count by 3 to get the image size in bytes.

**What is the ratio of the height of an image to the height of an object known as?**

The ratio of the height of an image to the height of an object is known as magnification.

**How do you find the height of an object?**

You can calculate the height of an object using the distance and angle. distance * cos(angle), where distance is the horizontal distance to the object, and angle is the angle above horizontal of the top of the object (from the viewer). The result will be the height above the viewer.

### What is the equation for height?

The maximum height of an object, given the initial launch angle and initial velocity is found with:h=v2isin2θi2g h = v i 2 sin 2 θ i 2 g .

### What is image height?

The Image Height is one part of the information that determines a picture’s, photo’s or other image’s dimension. Together with the image width, this value determines the size of an image itself, not the file size. Often, Image Height is given in pixels, e.g. 682 px.

**What is the lens maker’s formula?**

Lens maker’s formula is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. It is used by lens manufacturers to make the lenses of particular power from the glass of a given refractive index.

**What is the ratio of the height of the image to the height of the object?**

Transverse magnification

Transverse magnification is the ratio of image height to object height.

## What can you tell about the size and orientation of an image formed in a mirror?

Images in a plane mirror are the same size as the object, are located behind the mirror, and are oriented in the same direction as the object (i.e., “upright”). If you walk behind the mirror, you cannot see the image, because the rays do not go there.

## What is the magnification of the first image after converging lens?

The first image is at distance of 75 cm after the converging lens. The magnification is N1=-di/do=-75/50. The image height is 6 cm and it is inverted.

**What is the image height and distance of the diverging lens?**

The image height is 6 cm and it is inverted. The first image is object for the diverging lens. The object distance from the diverging lens is 139-75=64 cm. The second image distance is -32, as you got.

**What is the height of the image from the concave lens?**

Therefore, image distance (v) = -20/3 = – 6.7 cm From results, we can conclude that the image is virtual, has a height of 2 cm, on the same side as the object, and at a distance of 6.7 cm from the concave lens. The power of a lens is its ability to converge the light rays falling on it.

### How to calculate the distance of an image?

Now, the Lens formula helps us in calculating the image distance. It is the formula, or we can say the equation that relates the focal length, the distance of the object, and the distance of the image for a lens. It is given as: 1/v + 1/o = 1/f. Where, v = Distance of image formed from the optical centre of the lens.

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