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2 years ago

State two factors that affect the type of Shadows formed

Physics

2 answers:

Vadim26 [7]2 years ago

7 0

Answer:

The two factors that affect the type of Shadows formed are stated below ::

The distance between the source of land and the object.
The angel where the ray of light falls on the object.

Dvinal [7]2 years ago

7 0

Answer:

The distance of the source of light from the object.

The angle at which the light rays fall on the object.

The size of the opaque object.

The size of the shadow depends on the distance of the source of light and on the angle at which the light rays fall on the object.

If the source of light is closer to the object, a larger shadow is formed than when the source of light is far from the object.

Explanation:

picture is in the top ️️️⬆️⬆️⬆️⬆️⬆️

It can be observed from the above figure that as the angle of light incident on the object changed the length of the shadow changed.

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3 years ago

A5 cm object is 18.0 cm from a convex lens, which has a focal length of 10.0 cm.

Masja [62]

Explanation:

We have,

Height of object is 5 cm

Object distance from a convex lens is 18 cm

Focal length of convex lens is 10 cm

i.e. h = 5 cm

u = -18 cm

f = +10 cm

Let v is distance of the image from the lens. Using lens formula :

$\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{10}+\dfrac{1}{(-18)}\\\\v=22.5\ cm$

The magnification of lens is :

$m=\dfrac{v}{u}=\dfrac{h'}{h}$ , h' is height of the image

$\dfrac{v}{u}=\dfrac{h'}{h}\\\\h'=\dfrac{vh}{u}\\\\h'=\dfrac{22.5\times 4}{(-18)}\\\\h'=-5\ cm$

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3 years ago

A person runs up 33 stairs of height 0.25 m. The person weighs 599.85 N. How much energy does it take for the person to reach th

Dafna11 [192]

Answer:

149.96J

Explanation:

Given parameters:

Number of stairs = 33

Height = 0.25m

Weight = 599.85N

Unknown:

Energy the person takes to reach the top = ?

Solution:

To solve this problem;

The energy it takes is given as:

Energy = weight x height

Energy = mass x gravity x height

Now,

Insert the given parameters and solve;

Energy = 599.85 x 0.25 = 149.96J

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3 years ago

State two factors that affect the type of Shadows formed ​

State two factors that affect the type of Shadows formed