Question

A concave mirror produces three times magnified (enlarged) real image of an object placed at 10 cm in front of it . where is the image located?​

Answer 1

Answer:

question_answer 1) A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Answer: Here, linear magnification (m) = - 3 (Negative sign for real image, which is inverted) Object distance Image distance As The image is located at 30 cm in front of the mirror.

Answer 2

30 cm to the left is the answer.

GIVEN:

• Magnification of concave mirror , m = -3 ( Since it is a real image)
• Object distance, u = - 10 cm

TO FIND:

Image distance, v

FORMULA:

Magnification of mirror ,m = -v/u

SOLUTION:

$m = - \frac{v}{u} \\ \\ -3 = - \frac{v }{ - 10} \\ \\ -3 = \frac{v}{10} \\ \\ v = -3 \times 10 \\ \\ v = -30 \: m$

ANSWER:

Image distance, v = -30 m

The image is at a distance of 30 cm on left of the concave mirror.

IMPORTANT POINTS:

• All points to the right of principal centre of mirror are taken positive.

• The points to the left of principal centre are negative.

• The points above the principal axis are positive.

• The points taken below the principal axis are negative.

• Focal length of concave mirror is negative and convex mirror is positive.

• Mirror formula is 1/f = 1/v + 1/u