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Len [333]
2 years ago
11

Mithun wants to test if a convex lens produces an inverted image of an object placed at a distance away from the lens. Which of

the following should he use directly as an object for the test?
a. A

b. B

c. C

d. D​

Physics
1 answer:
Elis [28]2 years ago
3 0

Answer:

(D) any of these objects can be used as long as all points on the object lie farther away from the lens than the focal length of the lens.

Points lying between the focal point and the lens will be erect and will not form an object visible on a screen.

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A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must i
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Answer:

Explanation:

We shall represent displacement in vector form .Consider east as x axes and north as Y axes west as - ve x axes and south as - ve Y axes . 255 km can be represented by the following vector

D₁ = - 255 cos 49 i  + 255 sin49 j

= - 167.29 i + 192.45 j

Let D₂ be the further displacement which lands him 125 km east . So the resultant displacement is

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So

D₁ + D₂ = D

- 167.29 i + 192.45 j + D₂ = 125 i

D₂ = 125 i + 167.29 i - 192.45 j

= 292.29 i - 192.45 j

Angle of D₂ with x axes θ

tan θ = -192.45 / 292.29

= - 0.658

θ = 33.33 south of east

Magnitude of D₂

D₂² = ( 192.45)² + ( 292.29)²

D₂ = 350 km approx

Tan

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3 years ago
How many balls are there in a ski ball machine?
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i think 2 per each sac

Explanation:

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For a particular type of motion, the velocity is zero but the speed is a nonzero quantity. Which statement can you make about th
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