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Lerok [7]
3 years ago
11

Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.54 cm radius of curvature. (b)

What is its power in diopters?
Physics
1 answer:
blondinia [14]3 years ago
6 0

Explanation:

It is given that,

Radius of curvature of the mirror, R = 1.54 cm

(a) We have to find the focal length of the mirror. The relationship between the focal length and the radius of curvature is given by :

R=2f

f = focal length of the mirror

f=\dfrac{1.54\ cm}{2}

f = 0.77 cm

(b) The power of mirror is given by the reciprocal of focal length i.e.

Power, P=\dfrac{1}{f}

P = 1.29 diopters

Hence, this is the required solution.

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ddd [48]
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3 0
3 years ago
A 8.0 µF capacitor is initially connected to a 2.0 V battery. Once the capacitor is fully charged the battery is removed and a 6
aalyn [17]

Answer:

I = 0.451 amp

Explanation:

given,

C = 8.0 µF

V = 2 V

resistor connected between two terminal = 6 Ω

current flowing through resistor = 13 µsec

Q = CV

Q = 8 x 2

Q = 16 µC                              

for an RC discharge circuit

V = V_0e^{-\dfrac{t}{RC}}

I = \dfrac{-Q_0}{RC}e^{-\dfrac{t}{RC}}

t =  13 µsec

I = \dfrac{-16}{6\times 2}e^{-\dfrac{13}{6\times 2}}

I = 0.451 amp

neglecting  -ve sign just to show direction.

3 0
3 years ago
Describe what introspection is.
krek1111 [17]

Answer:

Introspection is a process that involves looking inward to examine one's own thoughts and emotions. ... The experimental use of introspection is similar to what you might do when you analyze your own thoughts and feelings but in a much more structured and rigorous way.

Explanation:

Example of it: The definition of introspection is self-examination, analyzing yourself, looking at your own personality and actions, and considering your own motivations. An example of introspection is when you meditate to try to understand your feelings. noun.

6 0
2 years ago
Read 2 more answers
.Roshan applied a force of 144 N to the side of a cube-shaped wooden block to slide it away from himself . Assuming that he appl
ExtremeBDS [4]
  • side of cube=4cm

Area=side^2=4^2=16cm^2=0.0016m^2

  • Force=144N

\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}

\\ \sf\longmapsto Pressure=\dfrac{144}{0.0016}

\\ \sf\longmapsto Pressure=90000Pa

3 0
2 years ago
A red light, green light, and blue light differ in A. amplitude. B. complexity. C. wavelength. D. purity.
Sindrei [870]

Answer:

A red light, green light, and blue light differ in wavelength

Explanation:

A red light, green light, and blue light differ in wavelength .

Different colors have different wavelengths or frequencies . Two light having different color may have different amplitude . Amplitude decides the intensity of light , not color. Sometimes , a light may be mixture of many color light like white light of the sun . Such light are not pure .

6 0
2 years ago
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