Advertisements
Advertisements
प्रश्न
What is the effect on the size and position of the image of moving the object (i) towards the lens, and (ii) away from the lens?
उत्तर
When an object is moved towards the lens, the size of the image starts increasing. The position of the image starts moving away from the lens and towards infinity (on the right side of the lens) till the object is placed at the focus. When the object is moved closer to the lens, the image is formed behind the object (left side of the lens). This image is virtual, erect and magnified in size.
(ii) When the object is moved away from the lens, the image so formed moves closer to the lens and gets diminished in size.
APPEARS IN
संबंधित प्रश्न
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be ______.
If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it? Draw a labelled ray diagram to support your answer.
Explain with a suitable diagram, how a concave mirror converges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.
Which type of mirror has:
negative focal length?
What would your image look like if you stood close to a large:
convex mirror?
A convex mirror used as a rear-view mirror in a car has a radius of curvature of 3 m. If a bus is located at a distance of 5 m from this mirror, find the position of image. What is the nature of the image?
Explain why, a real image can be projected on a screen but a virtual image cannot.
The angle formed between the normal and the refracted ray is known as the angle of incidence.
Magnification produced by a rear view mirror fitted in vehicles
The Convex mirror always forms ______ and ______ image.
