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Wittaler [7]
3 years ago
8

Light rays from an object after passing through a convex lens form an image at the focal point behind the lens (opposite side of

the object). What is the actual position of the object? at the focal point in front of the lens at twice the focal length between the focal point and twice the focal length at a great distance, effectively infinite between the focal point and the lens NextReset
Physics
2 answers:
Colt1911 [192]3 years ago
8 0
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.


The actual position of the object is between the focal point and twice the focal length and <span>at the focal point in front of the lens. I think it would be A and C. </span>
BaLLatris [955]3 years ago
3 0

Answer:

effectively infinite between the focal point and the lens

Explanation:

Light rays from an object after passing through a convex lens form an image at the focal point behind the lens (opposite side of the object).

Now from lens formula we know that

\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}

now we know that image forms at focal point

so we will have

d_i = f

now from the equation above

\frac{1}{f} + \frac{1}{d_o} = \frac{1}{f}

so we will have

\frac{1}{d_o} = 0

so position of object is at infinite distance from lens

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You drive 4 km at 30 km/h and then another 4 km at 50 km/h. What is your average speed for the whole 8-km trip?
Setler79 [48]

Answer:

option A

Explanation:

given,

drive 4 km at 30 km/h and

another 4 km at 50 km/h

average speed for the whole 8 Km trip = ?

time for the trip of first 4 km

 distance = speed x time

t_1 = \dfrac{d}{s}

t_1 = \dfrac{4}{30}

     t₁= 0.1333 hr

time from another 4 km trip

t_2 = \dfrac{d}{s}

t_2= \dfrac{4}{50}

     t₂ = 0.08 hr

average speed

     s= \dfrac{d}{t}  

     s= \dfrac{8}{0.1333 + 0.08}  

     s= \dfrac{8}{0.2133}  

            s = 37.50 Km/hr

Less than 40 Km/h

the correct answer is option A

6 0
3 years ago
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Square feet or square meters?

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A lever has a mechanical advantage of 5.4. If you apply a force of 500 N to the lever, how much force does the lever apply to th
Yanka [14]

Force applied by the lever to the object=2700 N

Explanation:

Mechanical advantage= \frac{LOAD}{EFFORT}

mechanical advantage= 5.4

effort force= 500 N

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5.4= load/500

load=2700 N

Thus the force applied by the lever to the object=2700 N

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What is the source of heat for convection currents in the mantle layer of earth
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Answer:

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Explanation:

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Find the magnitude of the vector v given its initial and terminal points. Round your answer to four decimal places.
Sliva [168]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is |v| = 6.93

Explanation:

From the question we are told that

    The initial point is (x_1 , y_1 , z_1 ) = (-1 , 7 , 4 )

    The  terminal point is  (x_2 , y_2 , z_2) = (-5 , 11, 8 )

Generally the magnitude of the vector is mathematically represented as

     |v| = \sqrt{(x_2 -x_1 )^2 + (y_2 - y_1 )^2 + (z_2 -z_1)^2}

=>   |v| = \sqrt{(-5 -(-1) )^2 + (11 - 7 )^2 + (8 -4)^2}

=>   |v| = 6.93

3 0
3 years ago
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