a concave mirror produces a real image of magnification 1/2 when an ob

1.	a concave mirror produces a real image of magnification 1/2 when an object is placed at a distance of 50 cm from it where should be the object be placed so that a virtual image of double the size is formed by the mirror
Answer» Answer: Initial OBJ. dist = -60(real OBJECT) ". magnification (m) = -1/2 (as both obj and image are real) We know , m= -f/(u-f) [f=focal LENGTH] f= -20cm Now , obj dist = u' magnification(m')=2 (as image is virtual of real object) f=-20 CM We know , m= -f/(u'-f) 2=20/(u'+20) u'=-10cm Hence , the obj should at a distance of 10 cm in front of the mirror.

a concave mirror produces a real image of magnification 1/2 when an object is placed at a distance of 50 cm from it where should be the object be placed so that a virtual image of double the size is formed by the mirror

Answer»

Answer:

Initial OBJ. dist = -60(real OBJECT)

". magnification (m) = -1/2 (as both obj and image are real)

We know , m= -f/(u-f) [f=focal LENGTH]

f= -20cm

Now , obj dist = u'

magnification(m')=2 (as image is virtual of real object)

f=-20 CM

We know , m= -f/(u'-f)

2=20/(u'+20)

u'=-10cm

Hence , the obj should at a distance of 10 cm in front of the mirror.

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a concave mirror produces a real image of magnification 1/2 when an object is placed at a distance of 50 cm from it where should be the object be placed so that a virtual image of double the size is formed by the mirror​

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a concave mirror produces a real image of magnification 1/2 when an object is placed at a distance of 50 cm from it where should be the object be placed so that a virtual image of double the size is formed by the mirror