Question

For a mirror:
If m(magnification) = -2 write the characteristics of the image formed
If m(magnification) = 2 write the characteristics of the image formed
If m(magnification) = -0.2write the characteristics of the image formed
If m(magnification) = 0.2 write the characteristics of the image formed
If m(magnification) = -1write the characteristics of the image formed
If m(magnification) = 1 write the characteristics of the image formed

(It’s a doubt from class 10 light chapter)

Answer 1

Answer:

magnification (m)= Height of image / Height of object

or –(image distance)/object distance

→if m=-2

real , inverted and enlarged image if formed.(2 times of object)

→if m=2

real, erect, enlarged image is formed.

→if m=-0.2

=-2/10=-1/5

virtual, inverted and diminished image is formed.

→if m=0.2=1/5

virtual, erect, diminished image is formed

→if m=-1

real, inverted and same size image is formed

→if m=1

real, erect and same size image is formed.

according to sign convention,

minus symbol in numerator indicates inverted image.

Answer 2

Answer:

Minus symbol in numerator indicates inverted image.

Explanation:

Magnification ( m ) = Height of image / Height of object

or – ( image distance ) / object distance

→if m= - 2

real , inverted and enlarged image if formed.(2 times of object)

→if m=2

real, erect, enlarged image is formed.

→if m = - 0.2

= -2 / 10= -1 / 5

virtual, inverted and diminished image is formed.

→ if m = 0.2 = 1 / 5

virtual, erect, diminished image is formed

→ i f m = -1

real, inverted and same size image is formed

→ if m = 1

real , erect and same size image is formed.

according to sign convention,

minus symbol in numerator indicates inverted image.

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