Science, asked by srushtinarkhede16, 4 months ago

Object height = 7cm
Object distance = -30 cm
Focal length = -lo com
Image distance =
Image height = ?​

Answers

Answered by sssingh290408
1

Answer:

Given object height (h  

o

​  

)=7cm

Object distance (u)=−25cm

focal length (f)=−15cm

Using mirror formula,

u

1

​  

+  

v

1

​  

=  

f

1

​  

 ; v= distance of an image

⇒  

v

1

​  

=  

25

1

​  

−  

15

1

​  

 

∴  

v

1

​  

=  

75

2.5

​  

 

⇒v=−37.5cm

The screen should be placed at 37.5cm from the pole of the mirror and infront of the mirror.

Magnification (m)=  

h  

o

​  

 

h  

i

​  

 

​  

=−  

4

v

​  

 

⇒  

h  

o

​  

 

h  

i

​  

 

​  

=−(  

−25

−37.5

​  

)=−1.5

∴h  

i

​  

=−(1.5×7)cm=−10.5cm

So, the size of the image is 10.5cm and it will be real, inverted, and magnified

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