111. A cylindrical cistern, constructed below ground level, is 3.0 m in diameter and 2.0 m deep and is filled to the brim with water. A small object rests on the bottom of the cistern at its center. How far from the edge of the cistern can a girl whose eyes are 1.2 m from the ground stand and still see the object?
Ray Optics
Optics is the study of light in the field of physics. It refers to the study and properties of light. Optical phenomena can be classified into three categories: ray optics, wave optics, and quantum optics. Geometrical optics, also known as ray optics, is an optics model that explains light propagation using rays. In an optical device, a ray is a direction along which light energy is transmitted from one point to another. Geometric optics assumes that waves (rays) move in straight lines before they reach a surface. When a ray collides with a surface, it can bounce back (reflect) or bend (refract), but it continues in a straight line. The laws of reflection and refraction are the fundamental laws of geometrical optics. Light is an electromagnetic wave with a wavelength that falls within the visible spectrum.
Converging Lens
Converging lens, also known as a convex lens, is thinner at the upper and lower edges and thicker at the center. The edges are curved outwards. This lens can converge a beam of parallel rays of light that is coming from outside and focus it on a point on the other side of the lens.
Plano-Convex Lens
To understand the topic well we will first break down the name of the topic, ‘Plano Convex lens’ into three separate words and look at them individually.
Lateral Magnification
In very simple terms, the same object can be viewed in enlarged versions of itself, which we call magnification. To rephrase, magnification is the ability to enlarge the image of an object without physically altering its dimensions and structure. This process is mainly done to get an even more detailed view of the object by scaling up the image. A lot of daily life examples for this can be the use of magnifying glasses, projectors, and microscopes in laboratories. This plays a vital role in the fields of research and development and to some extent even our daily lives; our daily activity of magnifying images and texts on our mobile screen for a better look is nothing other than magnification.
![三
111. A cylindrical cistern, constructed below ground
level, is 3.0 m in diameter and 2.0 m deep and is filled to
the brim with water. A small object rests on the bottom
of the cistern at its center. How far from the edge of the
cistern can a girl whose eyes are 1.2 m from the ground
stand and still see the object?
sh
sh
112. Consider a common mirage formed by superheated
air just above a roadway. A truck driver whose eyes are
2.00 m above the road, where n= 1.000 3, looks forward.
She has the illusion of seeing a patch of water ahead on
the road, where her line of sight makes an angle of 1.20°
below the horizontal. Find the index of refraction of the
air just above the road surface. [Hint: Treat this as a
problem involving total internal reflection.]
1.
ap
th
113. A light ray strikes a flat piece of glass at an angle of
incidence 60° The index of refraction of the glass is 1.5.
The thickness of the glass is 2 cm. Trace the light ray
until it emerges from the glass.
a.
509
Air
Glass
114. The index of refraction for red light in water is
1.331, and that for blue light is 1.340. If a ray of white
light enters the water at an angle of incidence of 83.00°,](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fedc85e3b-dc2d-4f8b-a097-9d7c53c76aad%2F39fe87ea-7594-498c-a235-29e1b54ac1ef%2Fhrv2wej_processed.jpeg&w=3840&q=75)
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
