1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AleksandrR [38]
3 years ago
7

A far-sighted person has a near-point of 80 cm. To correct their vision so that they can see objects that are as close as 10 cm

to their eye, what should be the focal length of the prescribed lens? Assume the lens will be 2 cm from the eye.
Physics
1 answer:
bekas [8.4K]3 years ago
3 0

Answer:

f = 8.89 cm

Explanation:

As we know that Far sighted person has near point shifted to 80 cm distance

so he is able to see the object 80 cm

now the distance of lens from eye is 2 cm

and the person want to see the objects at distance 10 cm

so here the image distance from lens is 80 cm and the object distance from lens is 8 cm

now from lens formula we have

\frac{1}{d_i} + \frac{1}{d_0} = \frac{1}{f}

-\frac{1}{80} + \frac{1}{8} = \frac{1}{f}

f = 8.89 cm

You might be interested in
A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric fiel
Elza [17]

Explanation:

Below is an attachment containing the solution.

3 0
3 years ago
Puedo violar a mi hermana?
Trava [24]
Interesante muy interesante

Pero no que estás diciendo???
6 0
2 years ago
The base ( foundation ) of building is made wider. Why ?​
attashe74 [19]

Answer: It is increased to exert the pressure off the bywalls and on large area (brainliest pls)

Explanation: ...

7 0
2 years ago
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!!
poizon [28]

Answer:

391.67Hz

Explanation:

The fundamental frequency formula in string is expressed as;

Fo = V/2L

V is the velocity of the wave = 329m/s

L is the length of the string = 42cm = 0.42m

Substitute

Fo = 329/2(0.42)

Fo = 329/0.84

Fo = 391.67Hertz

Hence the  fundamental frequency of a mandolin string is 391.67Hz

4 0
3 years ago
A 50-cm wire placed in an east-west direction is moved horizontally to the north with a speed of 2.0 m/s. the horizontal compone
Strike441 [17]

When a wire is moved inside uniform magnetic field then its free electrons will experience magnetic force on it due to which wire will have potential difference at its ends.

Now here we will have magnetic field due to earth and wire is moving in this constant field so induced emf is given by formula

EMF = v.(B x L)

given that

B = 25\mu Tj - 50\mu Tk

v = 2 m/s j

L = 0.50 m (-i)

now by using the above formula we will have

EMF = 2(j) .(25\mu j - 50\mu k) x (-0.50 i)

EMF = 2(j) .(12.5\mu k + 25\mu j)

EMF = 50 \mu Volts

5 0
2 years ago
Read 2 more answers
Other questions:
  • What would be the radius of the earth if it had its actual mass but had the density of nuclei?
    10·1 answer
  • Whitt is considered a prokaryotic cell
    6·1 answer
  • 1. why does the sun have the greatest amount of gravity in our solar system?
    11·2 answers
  • Radio waves coming from a radio station are tuned into by a student in class. What form of energy transfer does the radio statio
    15·1 answer
  • A 1000 Kg car approaches an intersection traveling north at 30 m/s . A 1250 Kg car approaches the same intersection traveling ea
    11·1 answer
  • Under the doppler effect, if the source of a wave is moving, it must be changing the frequency of the wave. true false
    8·1 answer
  • Find the magnitude & direction: 50N 25 N 35 N 10N
    14·1 answer
  • Assume that the diagram above shows infrared radiation. How would a diagram showing X-rays be different???????​
    5·1 answer
  • Delaney loves her new kiddie pool, but she is afraid to get wet. She crawls around the outside of the pool for hours. Jocelyn sa
    10·1 answer
  • Please help 24 POINTS
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!