Question

the object of height 12 cm placed in a front of a convex mirror at a distance of 60 cm and the radius of curvature of mirror is 30 cm find the nature Position and height of image​

Answer 1

Here, u=-12cm,R=-30cm, f=R2=-15cm

1v=1f-1u=1-15+112=160

v=60cm

similarly questions

If an object of 10 cm height is placed at a distance of 36 cm from a concave mirror of focal length 12 cm, find the position, nature and height of image.

Ans~~

Applying Mirror Formula

Object distance   u=−36 cm

Focal length of concave mirror    f=−12 cm

Using mirror formula :    v1+u1=f1

Or   v1+−361=−121

⟹ v=−18 cm,

Since image position is negative, i.e. image is on the same side of object, which is real space, therefore the image is real.

Step2: Finding Height using Magnification

Magnification   hohi=u−v

Or    10hi=−12−(−18)

⟹ hi=−15 CM

Negative height implies that the image is inverted.

Hence, a real and inverted image of height 15 cm is formed at a distance of 18 cm in front of the mirror.

Answer 2

Explanation:

Ohm's Law states that electric current flowing in a conductor is directly proportional to potential difference across the ends of the conductor,provided temperature and other physical conditions remains constant. ... In an electric circuit,sometimes current has to be increase or decrease.