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Does the focal length of a spherical mirror or lens change when placed under water?
i do not think so because a mirror an a lens is two same things except that mirrors can reflect the water and the lens may refract or bend the water so that can change the focal length between the mirror and the lens
What is a concave mirror has a radius of curvature of 40.5 cm. how far is the mirror from the persons face?
The focal length of a mirror with a radius of curvature of 40.5 cm is half of the radius, so it is 20.25 cm. The mirror's face would be placed around this focal length distance from the person's face for optimal viewing.
What mirror gives virtual and larger image than the object?
A concave mirror can give a virtual and larger image than the object when the object is placed within the focal length of the mirror. When the object is placed beyond the focal point, a real, inverted, smaller image is formed.
What happens to the image in a concave mirror when an object is closer to the mirror than one focal length?
When an object is placed closer to a concave mirror than its focal length, the image formed is virtual, upright, and magnified. The image is located behind the mirror, and the rays of light appear to diverge from a point behind the mirror rather than converging at a real focal point.
What type of mirror is used whenever a magnified image of an object is used?
A concave mirror is typically used to create a magnified image of an object. The mirror curves inward and can produce an enlarged virtual image when the object is placed within the focal length of the mirror.
Does the focal length of a spherical mirror or lens change when placed under water?
i do not think so because a mirror an a lens is two same things except that mirrors can reflect the water and the lens may refract or bend the water so that can change the focal length between the mirror and the lens
What is a concave mirror has a radius of curvature of 40.5 cm. how far is the mirror from the persons face?
The focal length of a mirror with a radius of curvature of 40.5 cm is half of the radius, so it is 20.25 cm. The mirror's face would be placed around this focal length distance from the person's face for optimal viewing.
What mirror gives virtual and larger image than the object?
A concave mirror can give a virtual and larger image than the object when the object is placed within the focal length of the mirror. When the object is placed beyond the focal point, a real, inverted, smaller image is formed.
What happens to the image in a concave mirror when an object is closer to the mirror than one focal length?
When an object is placed closer to a concave mirror than its focal length, the image formed is virtual, upright, and magnified. The image is located behind the mirror, and the rays of light appear to diverge from a point behind the mirror rather than converging at a real focal point.
What type of mirror is used whenever a magnified image of an object is used?
A concave mirror is typically used to create a magnified image of an object. The mirror curves inward and can produce an enlarged virtual image when the object is placed within the focal length of the mirror.
A converging mirror has a focal length of 20cm Where should an object be placed so that its virtual image will be twice as tall as the object?
10cm
What is the focal length of a mirror when it is placed in water with respect to air?
The focal length remains the same because only refraction is affected by the different media. Reflection does not depend on the media.
What shape is a concave mirror and what do things look like in it?
A concave mirror bulges away from the incident light. The image of an object depends on where exactly the object is placed - relative the to focal length of the mirror. See the attached link for more details.
Image form by concave mirror?
A2. A concave mirror is commonly used as a make-up mirror or a shaving mirror. For at close distances, (well inside it focal length) it gives a modest magnification. At distances greater than its focal length, it gives diminished images.
Do the objects size change when its placed at the focal length of the concave mirror?
The objects size is not going to change. The image size, however, would.
How is lady shalott able to see the world?
Lady Shalott is able to see the world through a mirror placed in her tower. She views the world outside through the reflections in the mirror since she is cursed to never look directly at reality.
How far should an object be placed from the pole of a converging mirror of focal length 20cm to form a real image of the size exactly one fourth the size of the object?
The object should be placed 10 cm away from the pole of the mirror to form a real image with a size exactly one fourth the size of the object. This is achieved using the mirror formula: 1/f = 1/v + 1/u, where u is the object distance, v is the image distance, and f is the focal length of the mirror.
