Question

If a person of height 1.45 meter stands in front of a plane mirror. he/she would get an image as high as
1. 1450m
2. 1450mm
3. 145mm
4 14.5​

Answer 1

Answer:

1450mm

Explanation:

Because the size of the image is same as the object in a plane mirror.

1 m = 1000 mm so 1.45 m = 1450 mm

Answer 2

Option 2 is right. If a person of a height of 1.45 meters stands in front of a plane mirror. he/she would get an image as high as 1450mm

• First, we have to understand the properties of images formed in a plane mirror.
• An image formed in a plane mirror will be virtual.
• It will be erect.
• It will be laterally inverted.
• Most importantly, the size of the image will be the same as that of the object.
• So, if the height of the object is 1.45 m the height of the image will be also 1.45 m.
• We know 1000mm = 1m
• 1.45 m = 1450mm
• Hence the size of the image will be 1450 mm