**Question 18:**A person approaches a plane mirror at a speed of 2 m/s. How fast does he approach his image?A) 3 m/s B) 2 m/s C) 1 m/s D) 4 m/s E) 1 m/s **Explanation:**This type of problem relates to the concept of images in plane mirrors. When a person approaches a plane mirror, their image in the mirror moves towards them at the same distance from the mirror as the person is on the other side. Therefore, the relative speed between the person and their image is twice the speed of the person approaching the mirror.In this case, the correct answer is D) 4 m/s, as the distance between the person and their image reduces at twice the speed of their approach (2 m/s + 2 m/s = 4 m/s).

Answered: Image /qna-images/answer/26e80005-7682-477e-b148-8abcaed342e4.jpg

Answered: 18) A person approaches a plane mirror…

18) A person approaches a plane mirror at a speed of 2 m/s How fast does he approach his image? A) 3 m/s B) 2 m/s C) 1 m/s E) 1 m/s D) 4 m/s

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter25: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 52P

See similar textbooks

Related questions

Q: In the diagram below, what minimum length of mirror is needed so that the a 1.8-m-tall person can…

A: From the figure, Height of person h=a+b and length of mirror = a+b2=h2

Q: Which angle is the angle of incidence for the light ray shown approaching the plane mirror?

A: Incident ray and the reflected rays are always taken with respect to the normal.

Q: 8) An object is placed at a distance of 80 cm from a converging lens with a focal length of 30 cm a)…

Q: You want to use a converging mirror to magnify and object the mirror has a focal length of 24cm.…

A: focal length of converging mirror (f) = 24 cm Magnification = 3.3 Image = upright

Q: a convex mirror has a focal length of 120 cm. A candle sits directly in front of the mirror. If the…

A: Focal length of convex mirror is Object is placed in front of the mirror.Image is formed at a…

Q: When you hold a spherical concave mirror with a 48.2-cm radius of curvature in front of your face,…

Q: You look at yourself in a diverging mirror. Your image isA. Upright. B. Inverted.C. It’s…

A: A diverging mirror is the convex mirror as it reflects light outward (towards the light source).

Q: 11) An object is 12 cm in front of a convex spherical mirror, and the image is 3.0 cm behind the…

Concept explainers

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

(i) An object is plated at a position p f from a concave mirror as shown in Figure CQ39.12a, where f is the focal length of the mirror. In a finite time interval, the object is moved to the right to a position at the focal point F of the mirror. Show that the image of the object moves at a speed greater than the speed of light. (ii) A laser pointer is suspended in a horizontal plane and set into rapid rotation as shown in Figure CQ39 12b. Show that the spot of light it produces on a distant screen can move across the screen at a speed greater than the speed of light. (If you carry out this experiment. make sure the direct laser light cannot enter a person's eyes.) (iii) Argue that the experiments in parts (i) and (ii) do not invalidate the principle that no material, no energy, and no information can move faster than light moves in a vacuum. Figure CQ39.12
An object 10.0 cm tall is placed at the zero mark of a meter-stick. A spherical mirror located at some point on the meter-stick creates an image of the object that is upright, 4.00 cm tall, and located at the 42.0-cm mark of the meterstick. (a) Is the mirror convex or concave? (b) Where is the mirror? (c) What is the mirror s focal length?
The object in Figure P23.52 is mid-way between the lens and the mirror, which are separated by a distance d = 25.0 cm. The magnitude of the mirrors radius of curvature is 20.0 cm, and the lens has a focal length of 16.7 cm. (a) Considering only the light that leaves the object and travels first toward the mirror, locate the final image formed by this system. (b) Is the image real or virtual? (c) Is it upright or inverted? (d) What is the overall magnification of the image? Figure P23.52
You are looking for a mirror so that you can see a four- fold magnified virtual image of an object when the object is placed 5 cm from the vertex of the mirror. What kind of mirror you will need? What should be the radius of curvature of the mirror?
A concave mirror has a radius of curvature of 60.0 cm. Calculate the image position and magnification of an object placed in front of the mirror at distances of (a) 90.0 cm and (b) 20.0 cm. (c) Draw ray diagrams to obtain the image characteristics in each case.
A person walks into a room that has two flat mirrors on opposite walls. File mirrors produce multiple images of the person. Consider only the images formed in the mirror on the left. When the person is 2.00 m from the mirror on the left wall and 4.00 m from the mirror on the right wall, find the distance from the person to the first three images seen in the mirror on the left wall.
What are the differences between real and virtual images? How can you tell (by looking) whether an image formed by a single lens or mirror is real or virtual?
A dance hall is built without pillars and with a horizontal ceiling 7.20 m above the floor. A mirror is fastened flat against one section of the ceiling. Following an earthquake, the mirror is in place and unbroken. An engineer makes a quick check of whether the ceiling is sagging by directing a vertical beam of laser light up at the mirror and observing its reflection on the floor. (a) Show that if the mirror has rotated to make an angle with the horizontal, the normal to the mirror makes an angle with the vertical. (b) Show that the reflected laser light makes an angle 2 with the vertical. (c) Assume the reflected laser light makes a spot on the floor 1.40 cm away from the point vertically below the laser. Find the angle .
Construct ray diagrams to determine whether each of the following statement is true (T) or false (F). (a) For an object at a concave mirrors center of curvature, the image is real and inverted. (b) As an object approaches the focal point of a concave mirror, the image size shrinks to zero. (c) For an object in front of a convex mirror, the image is always virtual and upright.
Consider a pair of flat mirrors that are positioned so that they form an angle of 120 . An object is placed on the bisector between the minors. Construct a ray diagram as in Figure 2.4 to show how many images are formed. Figure 2.4 Two minors can produce multiple images. (a) Three images of a plastic lead are visible in the two minors at a right angle. (b) A single object reflecting from two minors at a right angle can produce three images, as shown by the greet, purple, and red images.
A converging lens in a vertical plane receives light from an object and forms an inverted image on a screen. An opaque card is then placed next to the lens, covering only the upper half of the lens. What happens to the image on the screen? (a) The upper half of the image disappears. (b) The lower half of the image disappears. (c) 'The entire image disappears, (d) The entire image is still visible, but is dimmer. (e) No change in the image occurs.