If The Mirror Is Immersed In Water (refractive Index 1.33), What Is Its Focal Length??
If the mirror is immersed in water whose refractive index is 1.33 , No change in its focal length.
What happens to focal length of mirror when immersed in water?
In case of spherical mirrors (both concave and convex), there will be no change in the focal length of the mirrors when immersed in water. This is because the focal length of mirrors does not depend on the external medium in which it is held.
When a spherical mirror is immersed in a liquid of refractive index What is the U focal length?
EXPLANATION: In case of spherical mirrors, there will be no change in the focal length of the mirrors when immersed in water.
Does focal length of mirror depend on refractive index?
Hint: The focal length of a mirror is a constant quantity. It does not change with medium nor does it depend on the refractive index of a medium. Hence, the focal length of the mirror in air is equal to the focal length of the mirror in the water.
What is the formula to find the focal length of the mirror?
By obtaining the Real image of a distant object at its focus, the focal length of the concave mirror can be estimated as shown in the diagram. The focal length of the convex mirror is positive, whereas that of the concave mirror is negative. The same can also be proved by using the mirror formula: (1/f = 1/v +1/u).
What is mirror formula?
Let’s explore the mirror formula (1/f = 1/v+1/u) and see how to locate images without drawing any ray diagrams.When a concave mirror of focal length f is immersed in water its focal length becomes F then?
explanation : We know, law of reflection doesn’t depend on refractive index of medium. so, when A concave mirror of focal length f (in air ) is immersed in water then, the focal length of the mirror in water remains constant e.g., f.
Which mirror is known as rear-view mirror?
Convex mirrors
Convex mirrors are used as rear-view mirrors in motor vehicles because they form virtual, erect and diminished images irrespective of distances of the object.Can mirror formula be applied to plane mirror?
Yes, it is true. The mirror formula applicable to the plane mirror. … The mirror formula applicable to all types of mirrors. Mirror formula states that the relationship integrates image distance, object distance and focal length of the mirror.
What happens if concave mirror is used as a rear-view mirror?
We cannot use a concave mirror as a rear-view mirror in vehicles because a concave mirror produces inverted images of distant objects. So, all the vehicles will be seen running upside down in the mirror.
Does the focal length of a mirror change in water?
The focus of a concave mirror is situated at a distance which is half of the radius of curvature of the mirror. When kept inside water, the laws of reflections are still valid, thus the focal length of the concave mirror does not change.
What happens to the focal length of a concave lens if it is immersed in water?
when concave lens immersed in water the focal length of lens increases because focal length of lens is directly proportional to refractive index of medium and when immersed in water the medium become more dancer so its focal length increases.
Does the focal length of a lens change when immersed in water will it increase or decrease?
Yes. Focal length changes when lens is immersed in water.
What is focal length of mirror?
The focal length ( f ) is the distance from a lens or mirror to the focal point ( F ). This is the distance from a lens or mirror at which parallel light rays will meet.How do you measure the length of a mirror?
What does the focal length of a mirror depend on?
radius of curvature
Focal length of a spherical mirror depends on radius of curvature of the mirror.How do you find the focal length?
The focal length of a double convex lens is given by the formula (1/v) + (1/u) = (1/f), where u is the distance between the object and the lens, v is the distance between the image and the lens.
What is the focal length of a convex mirror?
The distance from the lens to the focal point is called the focal length. For diverging or convex mirrors, the focal length is always positive. For a converging or concave mirror, the focal length is always negative. The focal length of a convex mirror is half of its radius of curvature.
What is the formula to calculate mirror?
Suppose an object is placed u cm in front of a spherical mirror of focal length f such that the image is formed v cm from the mirror, then u, v and f are related by the equation; 1/f= 1/u + 1/v. This equation is referred to as the mirror formula. The formula holds for both concave and convex mirrors.
When a concave mirror is held towards the sun?
(a) The spherical mirror is concave. (b) A hole is burnt in the carbon paper, because a concave mirror converges light rays, and in this case, it converges a lot of heat rays coming from the sun and concentrates at the point of the sun’s image which burns the hole in carbon paper.When object is brought closer to pole of a convex mirror then the image will?
Answer: If the object is further moved towards the mirror, the image now becomes erect and magnified and it is formed behind the mirror.
When an object is placed at a distance of 20cm?
If an object is placed at a distance of 20cm from the pole of a concave mirror, the magnification of its real image is 3. If the object is moved away from the mirror by 10cm, then the magnification is -1.
What are shaving mirrors?
A shaving mirror is a small, often round, mirror that can be moved out from a wall, and which you use to see your reflection when you are shaving your face. The shaving mirror is next to the basin and is mounted on a retractable arm.
What is car front mirror called?
The different types of Mirror used in cars are. Convex mirror. The side mirrors of the car and the rear view mirror of a car are made up of convex mirrors.Which is called converging mirror?
A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point. They are used to focus light.What is focal length of plane mirror is mirror formula valid on it explain?
question_answer Answers(3) Focal length of a plane mirror is infinity. (A plane mirror can be considered as a spherical mirror of infinite radius of curvature. Focal length is half of radius of curvature and hence it is infinity.
What is the focal length of a plane?
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 mirror formula for plane mirror?
The Mirror Equations
f=R/2 or f=∞ for a plane mirror.
What will happen if a concave mirror is used in the experiment?
Answer: If a convex mirror is used instead of concave mirror, the light rays will diverge ,that means they will not fall on the screen, they will go elsewhere. … Rays after reflection on Convex mirror will diverge.
Why do we prepare a concave mirror as a rear-view mirror in vehicles?
We prefer a convex mirror as a rear-view mirror in vehicles because it gives a wider field of view, which allows the driver to see most of the traffic behind him. … The image produced by a convex mirror is always virtual and located behind the mirror.
What are the consequences of using a concave mirror as a side mirror?
Spherical concave mirrors
The image of the object (the toy car) is larger. Concave mirrors, on the other hand, can have real images. If the object is further away from the mirror than the focal point, the image will be upside-down and real—meaning that the image appears on the same side of the mirror as the object.
