How to figure distance vs. TV screen size?

How to figure distance vs. TV screen size?
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14. An object 2 cm in size is placed 30 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? What will be the nature and the size of the -Chemistry-10

Description : 14. An object 2 cm in size is placed 30 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? What will be the nature and the size of the -Chemistry-10

Last Answer : Answer. hope this helps you

15. An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image. -Physics-10

Description : 15. An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image. -Physics-10

Last Answer : Object distance (u) = – 27 cm Object height (h) = 7 cm Focal length (f) = – 18 cm According to the mirror formula, The negative value of image height indicates that the image formed is inverted.

An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the convex lens and size of the image formed on the screen? Draw a ray diagram to show the formation of the image in this position of the object with respect to the lens. -Physics

Description : An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object ... diagram to show the formation of the image in this position of the object with respect to the lens. -Physics

Last Answer : Since, object-screen distance is double of object-lens separation, the object is at a distance of 2f from the lens and the image should be of the same size of the object.

Which technology(LED/LCD/Plasma) and screen size is good for a TV to watch Worldcup?

Description : Which technology(LED/LCD/Plasma) and screen size is good for a TV to watch Worldcup?

Last Answer : answer:It used to be that plasma was the way to go for sports/action because the response time is very fast. The LCDs, including with LED backlight, are now a lot faster than they used to be, so for most ... . IMHO the only reason to get a non-LED LCD TV these days is if it's on deep discount.)

Is a 42 inch philips tv a good size flat screen?

Description : Is a 42 inch philips tv a good size flat screen?

Last Answer : The best flat screen TV to own depends on the space you have. If you are going to use the TV in a smaller room then the 42 inch will seem plenty big because you are sitting closer to it. But ... 42 inch TV because you will probably be sitting further from the TV and it won't complement your room.

What size corner TV stand do you need for a 60 inch flat screen TV?

Description : What size corner TV stand do you need for a 60 inch flat screen TV?

Last Answer : If you have a 60 inch TV I would assume that you would need anything greater than 60 inches stand for the TV.

In a distance vs time graph what will the slope of the line tell you?

Description : In a distance vs time graph what will the slope of the line tell you?

Last Answer : Need answer

What is the distance to horizon vs height above ocean water?

Description : What is the distance to horizon vs height above ocean water?

Last Answer : The distance to the horizon, d kilometres, is related to theheight above mean sea level, h metres, by the approximate formula:d = 3.57*sqrt(h).

How will you describe the graph of distance vs. time squared?

Description : How will you describe the graph of distance vs. time squared?

Last Answer : What is the answer ?

For LCD TV sets, how important is 1080p vs. 720p?

Description : For LCD TV sets, how important is 1080p vs. 720p?

Last Answer : well 1080 vs 720 refers to the horizontal lines being fit onto the screen. the more that are fit in the better the quality of the image you will see. I think it is important that you also take into ... it. Also, the brand LG is perfectly suitable. It is well known here in Australia as a good brand.

Why should I buy a plasma TV vs an LCD TV?

Description : Why should I buy a plasma TV vs an LCD TV?

Last Answer : I was told a plasma will burn out after so many hours of use. If you watch as much tv as I do, I’d go with an LCD. We just got a Sony Bravia, 46 inch. Great picture!

Life vs. House TV shows?

Description : Life vs. House TV shows?

Last Answer : in what way “like”? One is an episodic medical drama and the other is a detective drama with a strong arc.

LCD VS. PLASMA TV in area w. no cable.

Description : LCD VS. PLASMA TV in area w. no cable.

Last Answer : I'm not an absolute expert, but I've heard LCDs are generally better value performance than Plasma, especially because can have a high cost of maintenance.

In figure LM is a line parallel to the Y-axis at a distance of 3 units. -Maths 9th

Description : In figure LM is a line parallel to the Y-axis at a distance of 3 units. -Maths 9th

Last Answer : Given, LM is a line parallel to the Y-axis and its perpendicular distance from Y-axis is 3 units. (i) Coordinate of point P = (3, 2) [since, its perpendicular distance from X-axis is 2] Coordinate of ... 3, abscissa of point M = 3 Difference between the abscissa of the points L and M = 3 -3 = 0

In figure LM is a line parallel to the Y-axis at a distance of 3 units. -Maths 9th

Description : In figure LM is a line parallel to the Y-axis at a distance of 3 units. -Maths 9th

Last Answer : Given, LM is a line parallel to the Y-axis and its perpendicular distance from Y-axis is 3 units. (i) Coordinate of point P = (3, 2) [since, its perpendicular distance from X-axis is 2] Coordinate of ... 3, abscissa of point M = 3 Difference between the abscissa of the points L and M = 3 -3 = 0

Q: What is the total distance around a figure? -General Knowledge

Description : Q: What is the total distance around a figure? -General Knowledge

Last Answer : Perimeter of a surface

In the figure, what is the distance from point P to line a?

Description : In the figure, what is the distance from point P to line a?

Last Answer : 3v/ 2 ~ 4.2

what- In the figure, what is the distance from point P to line a?

Description : what- In the figure, what is the distance from point P to line a?

Last Answer : \sqrt(9.8)~ 3.13

A straight rod of mass m and lenth `L` is suspended from the identical spring as shown in the figure The spring stretched by a distance of `x_(0)` due

Description : A straight rod of mass m and lenth `L` is suspended from the identical spring as shown in the figure The spring stretched by a distance of `x_(0)` due

Last Answer : A straight rod of mass m and lenth `L` is suspended from the identical spring as shown in the figure The spring ... `(mgR)/(2LE)` D. `(mgR)/(E)`

Assertion Upper wire shown in figure is fixed. At a certain distance x,lower wire can remain in equilibrium. Reason The above equilibrium of lower wir

Description : Assertion Upper wire shown in figure is fixed. At a certain distance x,lower wire can remain in equilibrium. Reason The above equilibrium of lower wir

Last Answer : Assertion Upper wire shown in figure is fixed. At a certain distance x,lower wire can ... above equilibrium of lower wire is stable equilibrium.

Which of the following figure shown the magnetic flux denstiy b at a distance r from a long straight rod carrying a steady current I ?

Description : Which of the following figure shown the magnetic flux denstiy b at a distance r from a long straight rod carrying a steady current I ?

Last Answer : Which of the following figure shown the magnetic flux denstiy b at a distance r from a long straight rod carrying a steady current I ? A. B. C. D.

A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is (A) (bd²/12) + (B) (d²/12 ) + (C) b²/12 + (D) d²/12 +

Description : A vertically immersed surface is shown in the below figure. The distance of its centre of pressure from the water surface is (A) (bd²/12) + (B) (d²/12 ) + (C) b²/12 + (D) d²/12 +

Last Answer : Answer: Option B

Figure out the components of non-verbal communication in a classroom from the following : (A) Facial expression, cultural space and seating arrangement (B) Speed of utterance, feel good factor and acoustics (C) High sound, physical ambience and teacher-learner distance (D) Facial expression, kinesics and personal space

Description : Figure out the components of non-verbal communication in a classroom from the following : (A) Facial expression, cultural space and seating arrangement (B) Speed of utterance, feel good ... sound, physical ambience and teacher-learner distance (D) Facial expression, kinesics and personal space

Last Answer : (D) Facial expression, kinesics and personal space 

The following question is based on the diagram given below. If the two small circles represent formal class-room education and distance education and the big circle stands for university system of education, which figure represents the university systems. (A) (B) (C) (D)

Description : The following question is based on the diagram given below. If the two small circles represent formal class-room education and distance education and the big circle stands for university system of education, which figure represents the university systems. (A) (B) (C) (D) 

Last Answer : Answer: B In Figure 2 big circle stands for University system of Education and two seprate small circle inside the Big circle represent formal class-room education and distance education.

15. An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the conve -Chemistry-10

Description : 15. An object 2 cm high is placed at a distance of 64 cm from a white screen. On placing a convex lens at a distance of 32 cm from the object it is found that a distinct image of the object is formed on the screen. What is the focal length of the conve -Chemistry-10

Last Answer : Since, object-screen distance is double of object-lens separation, the object is at a distance of 2f from the lens and the image should be of the same size of the object.

2. An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. [All India] -Chemistry-10

Description : 2. An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. [All India] -Chemistry-10

Last Answer : this is the answer for the respected question

An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. -Physics

Description : An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. -Physics

Last Answer : The focal length' of convex length is 7.14 cm. Solution: The given quantities are Height of the object h = 50 cm Height of the image formed h' = -20 cm Image distance v = 10 cm The image ... object distance will be So the focal length will be Thus the focal length of the convex lens is 7.14 cm

An object is placed at a distance of `1.5 m` from a screen and a convex lens is interposed between them. The magnification produced is `4`. What is th

Description : An object is placed at a distance of `1.5 m` from a screen and a convex lens is interposed between them. The magnification produced is `4`. What is th

Last Answer : An object is placed at a distance of `1.5 m` from a screen and a convex lens is interposed between ... `4`. What is the focal length of the lens ?

In the diagram shows below rays are coming from infinity and after passing through both the lenses meet on a screen placed at a distance of 30 cm from

Description : In the diagram shows below rays are coming from infinity and after passing through both the lenses meet on a screen placed at a distance of 30 cm from

Last Answer : In the diagram shows below rays are coming from infinity and after passing through both the lenses ... Calculate the focal length of the concave lens.

An object of `1cm^(2)` face area is placed at a distance of 1.5m from a screen. How far from the object should a concave mirror be placed so that it f

Description : An object of `1cm^(2)` face area is placed at a distance of 1.5m from a screen. How far from the object should a concave mirror be placed so that it f

Last Answer : An object of `1cm^(2)` face area is placed at a distance of 1.5m from a screen. How ... the screen? Also, calculate the focal length of the mirror.

Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer screen at a distance of 40 cm from it. Where should a 80 c

Description : Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer screen at a distance of 40 cm from it. Where should a 80 c

Last Answer : Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer ... 80 cd source be placed to balance the illuminance ?

A converging lens forms a three times magnified image of an object, which can be take on a screen. If the focal length of the lens is 30 cm, then the distance of the object from the lens is (a) - 55 cm (b) - 50 cm (c) - 45 cm (d) - 40 cm

Description : A converging lens forms a three times magnified image of an object, which can be take on a screen. If the focal length of the lens is 30 cm, then the distance of the object from the lens is (a) - 55 cm (b) - 50 cm (c) - 45 cm (d) - 40 cm

Last Answer : (d) - 40 cm

Which of the following condition is essential for observing Fraunhofer diffraction? A. Source must be close to slit and screen should be at infinite distance B. Both source and screen must be close to slit C. Source must be at infinity and screen should be close to the slit D. Both source and screen must be at infinity

Description : Which of the following condition is essential for observing Fraunhofer diffraction? A. Source must be close to slit and screen should be at infinite distance B. Both source and screen must be close to ... infinity and screen should be close to the slit D. Both source and screen must be at infinity

Last Answer : D. Both source and screen must be at infinity

Fraunhofer diffraction is observed when __________. A. Only screen is placed at finite distance B. source is placed at finite distance C. neither source nor screen is at finite distance D. None of these

Description : Fraunhofer diffraction is observed when __________. A. Only screen is placed at finite distance B. source is placed at finite distance C. neither source nor screen is at finite distance D. None of these

Last Answer : D. None of these

Fresnel’s type diffraction is observed when __________. A. Only screen is placed at finite distance B. Only source is placed at finite distance C. Both source and screen are at finite distance D. Neither source nor screen is at finite distance

Description : Fresnel’s type diffraction is observed when __________. A. Only screen is placed at finite distance B. Only source is placed at finite distance C. Both source and screen are at finite distance D. Neither source nor screen is at finite distance

Last Answer : C. Both source and screen are at finite distance

Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent minima on the screen to increase? A. A. increase the index of refraction of the medium in which the setup is immersed B. increase the separation d between the slits C. increase the distance D. increase the frequency of the incident light

Description : Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent ... d between the slits C. increase the distance D. increase the frequency of the incident light

Last Answer : B. increase the separation d between the slits

If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of

Description : If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of deflection plates is 2 cm, the distance between the plates is 1 cm and accelerating voltage is 500 V, deflection sensitivity is   (a) 33.2 V/cm (b) 0.03 cm/V (c) 66.4 V/cm (d) 0.015 cm/V

Last Answer : If the distance of screen from a CRT to center of deflection plates is 15 cm, the length of deflection plates is 2 cm, the distance between the plates is 1 cm and accelerating voltage is 500 V, deflection sensitivity is 0.03 cm/V

I would like to know the pros and cons of a fiberglass pool vs a concrete pool. Can you give me an idea of price of a fiberglass pool vs concrete Oval shape does not need to be lap size. Also, most energy & chemical efficient pool w/out spending alot ?

Description : I would like to know the pros and cons of a fiberglass pool vs a concrete pool. Can you give me an idea of price of a fiberglass pool vs concrete Oval shape does not need to be lap size. Also, most energy & chemical efficient pool w/out spending alot ?

Last Answer : the cost for fiberglass pools are chaeper and easier to install.concrete pools are easier to maintain.a fiberglass pool may run you 3,000 to 10,000. A concrete pool run you 12,000 to 30,000 depending on the size and area of residence