Physics, 29.03.2020 03:05 mani1682

The concave mirror shown below has an object placed 20cm in front of it. An image is formed in 35 cm in front of the mirror. What is the nature of the image? Calculate the magnification of the image and the focal length of the mirror

Answers: 2

Show answers

Answers

Answer from: taterbuglee2003

The concave mirror that has an object placed 20cm in front of it. and an image is formed at 35 cm in front of the mirror.

The nature of the image formed is

(i) It is Formed beyond C

(ii) It is enlarged

(iii) It is magnified

The magnification is 1.75

The Focal length of the mirror is 12.73 cm

From the question, we need to calculate the focal length of the mirror using mirror formula.

1/f = (1/v)+(1/u) Eqaution 1

Where f = focal length, v = object distance, u = image distance.

From the question,

Given: v = 20 cm, u = 35 cm

Substitute these values into equation 1

1/f = (1/20)+(1/35)

1/f = (20+35)/(20×35)

f = (20×35)/(20+35)

f = 700/55

f = 12.73 cm.

Hence the mirror focal length is 12.73 cm

Since the mirror is placed between F and C in a concave mirror

The nature of the image formed is

(i) It is Formed beyond C

(ii) It is enlarged

(iii) It is magnified

Finally,

magnification = image distance/object distance = D/D'

mag = 35/20

mag = 1.75.

Hence the magnification of the image is 1.75

Learn more about concave mirrors here: link

Answer from: hihihi129473838

image is real, Inverted and magnified

Focal length of the mirror is 12.7 cm

Explanation:

As we know that object is placed at distance 20 cm in front of mirror and its image formed at 35 cm in front of mirror

So here since object and image both are on same side of mirror so this must be REAL image

now we know that magnification is given as

$M = -\frac{d_i}{d_o}$

$M = - \frac{35}{20}$

M = -1.75

so image is real, Inverted and magnified

now for focal length of the mirror we can use the equation

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{20} + \frac{1}{35} = \frac{1}{f}$

f = 12.7 cm

Answer from: Quest

a is the best answer your welcome

Answer from: Quest

Well the magnitude of its acceleration related to that car starts with the oil change like when you have to change the oil in your car you have to make sure that your precious car is starting really propley and very well

Another question on Physics

Physics, 21.06.2019 20:50

Identify the type of synthetic material used in each object

Answers: 1

Answer

Physics, 21.06.2019 22:50

Moon effect. some people believe that the moon controls their activities. if the moon moves from being directly on the opposite side of earth from you to being directly overhead, by what percentage does (a) the moon's gravitational pull on you increase and (b) your weight (as measured on a scale) decrease? assume that the earth–moon (center-to-center) distance is 3.82 × 10^8 m, earth's radius is 6.37 × 10^6 m, moon's mass is 7.36 × 10^22 kg, and earth's mass is 5.98 × 10^24 kg.

Answers: 2

Answer

Physics, 22.06.2019 04:30

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Answers: 1

Answer

Physics, 22.06.2019 13:30

Place me with this question is my last question

Answers: 3

Answer

You know the right answer?

The concave mirror shown below has an object placed 20cm in front of it. An image is formed in 35 cm...