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What is the height of the shadow when the distance from the object to the screen is 60 cm ............................?
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How can you calculate height of a pyramid by measuring the length of its shadow?
By means of trigonometry if you know the angle of elevation or by comparing it with a nearby object if you know its height and shadow length.
How do you use shadow method to estimate height or distance?
Measure height and shadow af a smaller object --- call these h1 and s1 measure the shadow of something larger like a tree. call this s2 its height is the unknown call it h2 use a proportion to solve the problem h1/s1 = h2/s2 substitute in the measured amounts, rearrange the equation (proportion) and find the answer.
How long in feet would the shadow be for an object which is 20.7 feet tall?
The length of the shadow depends not only on the height of the object, but also on how high the Sun is in the sky.
At 11 am on January 13 If the length of the shadow is 2 m and 44 cm what is the Suns zenith angle?
The angle of the sun can be worked out through trigonometry, but first you will need the height of the object that is causing the shadow, since a taller object will make a longer shadow. Tan a = H/2.44 Where a is the angle and H is the height of the object. And the date is not relevant.
What will be the height of the shadow cast by a person standing near a 20 ft light post.The height of the person is 6 ftThe distance between man and pole is 10 ft?
It is zero: 0cm; 0mm A shadow has no height: length yes, but height no
What factors affect the size of a shadow formed on a screen?
The size of the shadows formed changes if the distance between the object and the screen is also changed. If there is an increase in the distance between the screen and the object, the size of the shadow also increases.
What is the height of the shadow when the distance from the light source to object is 24cm?
The height of the shadow would be the same as the object's height if the light source was directly above the object. If the distance from the light source to the object is 24cm, the shadow's height would depend on the angle of the light source to the object and the height of the object.
The closer the light source the shadow is what?
The closer the light source the larger is the shadow. You can understand this effect using the paraxial aproximation of light theory. If you draw lines from the light source to the edges of an object, there is an angle (call it alpha) between the these lines and the orthonormal vector to the object. The shorter the distance between the light and the object, the higher is alpha (because the height of the object is always the same): tan(alpha) = (height of the object)/(distance between light and object) Of course the relationship between the height of the shadow and the angle is the same: tan(alpha) = (height of the shadow)/(distance to the wall in which the shadow is proyected) So, the higher the angle alpha (and closer the distance between light and object), the heigher is the shadow.
What three things do length and position of a shadow changing depend on?
The length and position of a shadow depend on the angle of the light source, the distance between the object and the surface the shadow falls on, and the height of the object casting the shadow.
What is the size of the shadow and the distance of the object from the light source when a shadow is formed?
The size of the shadow depends on the size of the object and the distance between the object and the light source. The bigger the object or the closer it is to the light source, the larger the shadow will be. The distance between the object and the light source affects the sharpness and intensity of the shadow.
When object is moved closer to screen what happens to the shadow?
When an object is moved closer to the screen, the shadow it casts typically becomes larger and more focused. This is because the object is now closer to the light source, creating a more defined shadow on the screen.
Can a shadow be smaller than the object?
Yes, a shadow can be smaller than the object casting it if the light source is closer to the object and the shadow is projected onto a surface at a distance. The size of the shadow is influenced by the angle of the light source, the distance between the object and the surface, and the size of the object.
Why does an object cast shadow on a screen 7 std science?
When a opaque object is placed between the source of light and the screen light from the source falls on a screen aceept some part which looks the shape of the object the Part of the screen wre high does not fall due to the object is called a shadow
When a shadow is formed does the object have to be opaque?
No, a shadow can still be formed if the object is translucent or transparent. The shadow may be lighter or less defined compared to an opaque object, but it will still be present.
Can an object shadow ever be smaller than the object?
No, an object shadow cannot be smaller than the object that is casting it. The size of the shadow is determined by the distance between the object and the light source, as well as the angle of the light hitting the object.
How do you make a shadow bigger or smaller?
To make a shadow bigger, you can increase the size of the object casting the shadow, move the object closer to the light source, or decrease the distance between the object and the surface the shadow falls on. To make a shadow smaller, you can decrease the size of the object, move the object farther from the light source, or increase the distance between the object and the surface.
What happens to a shadow when the object is moved?
The shadow's position changes relative to the light source and object. It will move and change in size depending on the direction and distance the object is moved.
