A concave mirror with a 5 cm focal length is set 15 cm away from a 10-cm tall figurine. What are the image's size and distance from the source? a. 5cm b. -5cm c. -7.5 cm d.7. 5 cm
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.
![A concave mirror with a 5 cm focal
length is set 15 cm away from a 10-cm
tall figurine.
What are the image's size and distance
from the source?
a. 5cm
b. -5cm
c. -7.5 cm
d.7.5 cm
What optical device needs the object to
be positioned at 2F in order to function?
Is it a telescope, a camera, a magnet, or
a photocopy?
What is the image distance if a convex
mirror is utilized as opposed to a
concave mirror? Will the measurement
be 3.75 cm, 7.5 cm, or -7.5 cm?
What kind of mirror is utilized in
department stores and cars to provide
the observer a wider field of view? is it
convex, plane, sphere or concave?
What image does the eye's lens project
onto the retina? Is it real and erect,
inverted and virtual, inverted and real, or
inverted and virtual?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc62c72e-b49e-46cc-9d4f-b0c8514df68d%2F927ea54e-78c3-458a-9275-50ffbf70e02c%2F6qi97m_processed.jpeg&w=3840&q=75)
![18. An overhead projector used convex lens that usually create an enlarged image when viewed on the screen.
Where must the transparency be placed in front of the lens to produce this kind of image
a. At 2 F
b. Beyond 2F
c. Between 1F' and 2F" or
d. Between 1F and O
19. Which of the following is true about convex mirrors?
I.
It will never form a real image.
An inverted image will be formed if the object distance is greater than the focal length
An object can be magnified if it placed at F
II.
III.
a. I only
b.
I and II
c. II and III
d. I, II, and Ill
20. Where should an object be placed in front of a concave mirror so that the image will have the same size as the
object?
a. At the focus
b. At the center of curvature
c. Between the focus and vertex
d. Between C and F
21. An object is placed between a concave mirror and its focal point. What is the type and orientation of the image
formed?
a. Virtual and inverted
b. Virtual and erect
c. Real and inverted
d. Real and erect
d. microscope
23. What are the optical instruments used in a microscope?
a. A concave and convex lens
b. A concave mirror
c. Two concave lenses
d. None of the above
25. An object is kept at a distance of 150 mm from a concave mirror with a radius of curvature of 600 mm. Find the
distance of the image
a. 150 mm
b. 150 mm
c. -300 mm
d. 300 mm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbc62c72e-b49e-46cc-9d4f-b0c8514df68d%2F927ea54e-78c3-458a-9275-50ffbf70e02c%2F4gzp64hb_processed.jpeg&w=3840&q=75)
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