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Ronch [10]
3 years ago
11

The final image from a simple two-lens telescope is:

Physics
1 answer:
s2008m [1.1K]3 years ago
4 0
A telescope with only one lens is built to photograph with.

A telescope with two lenses is built to look through.  It produces
an image for your eye to look at.  The image is virtual and inverted.
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A motion sensor emits sound, and detects an echo 0.0115 s after. A short time later, it again emits a sound, and hears an echo a
Mekhanik [1.2K]

Answer:

1.17 m

Explanation:

From the question,

s₁ = vt₁/2................ Equation 1

Where s₁ = distance of the reflecting object for the first echo, v = speed of the sound in air, t₁ = time to dectect the first echo.

Given: v = 343 m/s, t = 0.0115 s

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s₁ = (343×0.0115)/2

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Similarly,

s₂ = vt₂/2.................. Equation 2

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s₂ = 3.14 m

The distance moved by the reflecting object from s₁ to s₂ = s₂-s₁

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