Question

what you say guava in Odia ???​

Answer 1

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guava ➫ pijuli

Answer 2

Answer:guava=pijuli

A concave mirror of focal length 10 cm is placed in front of an object

To Find :-

Position

Solution :-

Since the size of of image is trice So,

hi = 3 × ho = 3ho

Magnification = -v/u = hi/ho

-v/u = hi/ho

Putting hi as 3ho

-v/u = 3ho/ho

v/u = -3ho/ho

Cancellation of ho

v/u = -3

By cross multiplication

v = -3 × u

v = -3u

By using mirror formula

1/f = 1/u + 1/v

1/-10 = 1/u + 1/-3u

-1/10 = 1/u + -1/3u

-1/10 = 3 + (-1)/3u

-1/10 = 3 - 1/3u

-1/10 = 2/3u

By cross multiplication

-1(3u) = 10(2)

-3u = 20

-u = 20/3

u = -20/3

u = -6.67 cm