The Image formed by a concave mirror is observed to be virtual, erect and larger than the object.Where should he the positron of the object?(a) Between the principal focus and the centre of carvature(b) At the centre of curvature(c) Beyond the centre of curvature(d) Between the pole of the mirror and its principal focus

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AB is a current carrying conductor in the plane of the paper as shown in the figure below. (i) What is the direction of the magnetic field produced by it at point ‘X’? Write the statement of the rule used to find the direction of field lines. (ii) If the polarity of the battery connected to the wire is reversed, how would the direction of the magnetic field be changed? (iii) Point ‘X’ is at a distance r1 and point ‘Y’ is at a distance r2 (r1

formula of c in curies temperature please ansewr i am waiting for the answer

Describe in operation electro dynamic whattmetermeter

For minimum flux the angle between the magnetic field and normal to the surface is