# What is the focal length of plane mirror * 1 point?

## What is the focal length of plane mirror * 1 point?

The focal length of a plane mirror is infinity as the image can be formed at an infinite distance inside the mirror. A plane mirror can be recognised as a spherical mirror of infinite radius of curvature. Focal length is half of the radius of curvature and hence it is infinity.

## What is the magnification and focal length of a plane mirror?

Magnification for a plane mirror, m = +1. The size of the image and object is same for a plane mirror. An object of size 7.

## What is the focus of plane mirror?

A plane mirror can also be considered as a spherical mirror whose radius of curvature is infinite and the centre of curvature will lie at infinite distance. Therefore, the focal length of a plane mirror will be equal to f=R2=∞2=∞. Hence, the focus of a plane mirror is at infinity.

## Do plane mirrors have a focal point?

1 Answer. A focal 'point' implies a convergence of light rays to some point in space whether it be a real or virtual point. And convergence of either transmissive or reflective optics requires curvature in the optics - so for plane mirrors, no there is no focal point that can occur by reflected light.

## Do we get an image with a concave mirror at the focus every time?

When a ray passes through focus and incident on a concave mirror then it will travel parallel to principal axis after reflection. Hence the image is formed at infinity.

## Do you get an image when object is placed at F?

Yes, we get a real, highly enlarged inverted image when object is placed at 'F.18-Oct-2016

## How can you see an image formed on the object itself?

To form the image on the object itself

1. An object AB has been placed at the centre of curvature 'C' on the concave mirror.
2. A ray of light AD which is parallel to principle axis passes through the focus 'F after reflection as DA'.
3. A ray of light passing through the focus of the concave mirror becomes parallel to the principle axis after reflection.
17-Oct-2016

## What is the difference between real and virtual image?

The main difference between real and virtual images lies in the way in which they are produced. A real image is formed when rays converge, whereas a virtual image occurs where rays only appear to diverge.

## What is the size of image formed by convex mirror?

The size of the image formed by the convex mirror is always smaller than the size of the object irrespective of the position of the object.

## Where should the object in front of a concave mirror get the same size image?

Answer. Answer: The object should be placed at the centre of curvature of the concave mirror to obtain an image of same size and real image.11-Oct-2020

## At what position should an object be placed in front of a concave mirror?

For real, inverted and reduced image, the object must be placed beyond the centre of curvature. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it.31-May-2020

## Where should an object be placed in front of?

Answer: At twice the focal length, the image formed by the convex lens is real and of the same size as the object. If the lens has a focal length of 20 cm, the object must be positioned 40 cm in front of the lens, creating an inverted image of the same size as the target, 40 cm behind the lens.05-Sep-2020

virtual images

## Which type of image is formed by convex mirror?

The image formed in a convex mirror is always virtual and erect, whatever be the position of the object. In this section, let us look at the types of images formed by a convex mirror. When an object is placed at infinity, a virtual image is formed at the focus.

## Is concave lens?

A concave lens is a lens that possesses at least one surface that curves inwards. ... It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).10-Dec-2010

## Does convex lens make things bigger?

A convex lens makes objects look larger and farther away. ... A concave lens makes objects look smaller and closer.

## Do convex mirrors make things smaller?

Convex mirrors make the object look shorter and wider than it really is. If the mirror is bent inward, it is a concave mirror. This type of mirror makes the object look taller and wider than it really is.08-Jan-2014

## Do concave mirrors make things smaller?

You may have noticed that many of these mirrors say "Objects in mirror are closer than they appear." This is because the objects are made smaller by the mirror, so they appear farther away! ... This is the opposite side of the glass bowl from earlier; a concave mirror bends light inwards, towards you.09-Feb-2011

## Do concave mirrors make things bigger or smaller?

Convex mirrors make the object look shorter and wider than it really is. If the mirror is bent inward, it is a concave mirror. This type of mirror makes the object look taller and wider than it really is.08-Jan-2014

## Do you look thinner in the mirror?

You don't look less fat in mirrors, the camera is making you look fatter than you really are. ... Some mirrors like the changing room mirrors in stores for example will make you look skinnier, while some of the bathroom mirrors in public places will make you look a little fatter.

## Does the mirror make me look bigger?

If a mirror is the tiniest bit bent it will alter the way you look. If a full length mirror is very slightly bowed outward, meaning toward you, in the middle it will make you look shorter and heavier. If it is very slightly bowed inward away from you it will make you look taller and slimmer.

## Do things look bigger in mirrors?

Mirrors are multitaskers. Not only do they make sure that you look good, they can also make your rooms look bigger, brighter, and better.30-Aug-2016

## Do mirrors make a small room look bigger?

Use mirrors If you've ever wondered, “Do mirrors make a room look bigger?” the answer is a resounding, “Yes.” Mirrors can make your room look larger and more open. Use a focal point and angle your mirrors toward it to give the illusion of depth.

## Can you put a large mirror in a small room?

DO use large mirrors in tiny rooms. A large mirror in a small room creates the illusion of depth, so don't be scared to go big. Deleon recommends placing a big mirror on the wall above a dining room table to reflect the chandelier, or installing a mirror across from a beloved piece of artwork.16-Aug-2012
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