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3 years ago

A concave lens can only form a. A. real image. B. reversed image. C. virtual image. D. magnified image.

2 answers:

4 0

A concave lens can only form a virtual image. The correct option among all the options that are given in the question is the third option or option "C". Concave lenses are mostly thinner in the middle compared to its edges. I hope that this answer has come to your help.

Tanya [424]3 years ago

3 0

A concave lens can only form a:

C. virtual image.

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Why is MA always less than VR?

jarptica [38.1K]

Answer:

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Explanation:

MA ( Mechanical Advantage ) is always less than VR ( Velocity Ratio ) because MA is reduced by friction but VR is not affected by friction.

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3 years ago

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3 years ago

Describe how to prepare a 10.0% w/v solution of salt in water in a 100 mL volumetric flask

Sphinxa [80]

To prepare a 10.0% w/v solution of salt in water in a 100 mL volumetric flask, first you must weigh 10 g of salt because the 10 % 100 is 10 and the given should be 10 % w/v. place the 10 g salt to the volumetric flask then add water up until to mark of the volumetric flask then shake it.

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3 years ago

The potential difference between the surface of a 3.0-cm-diameter power line and a point 1.0 m distant is 3.9 kV. Find the line

Korolek [52]

Answer:

The linear charge density is 5.19 X 10⁻⁶ C/m

Explanation:

The potential difference between two cylinders, is given as

V = (λ/2πε)ln(b/a)

where;

λ is the line charge density on the power line.

b is the distance between the power line = 1 m

a is the radius of the wire = 1.5 cm = 0.015 m

ε is the permittivity of free space = 8.9 X 10⁻¹² C

V*2πε = λ* ln(b/a)

3900 *(2π*8.9 x10⁻¹²)= λ *ln(1/0.015)

2.1812 X 10⁻⁷ = 4.1997* λ

λ = 5.19 X 10⁻⁶ C/m

Therefore, the linear charge density is 5.19 X 10⁻⁶ C/m

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3 years ago

A flat metal washer (a circular plate with a circular hole cut out of it) is heated. Does the hole get smaller, larger, or remai

Pepsi [2]

It gets larger since the heat is expanding it outward

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3 years ago