A person looking at a person wearing a shirt with a pattern comprising vertical and horizontal lines is able to see the vertical lines more distinctly than the horizontal ones. What is this defect due to? How is such a defect of vision corrected?

A person is six feet tall.How tall must a vertical mirror be,if he is able to see his entire length?

What is the name of horizontal and the vertical lines drawn to determine the position of any point in the cartesian plane.

What is the name of horizontal and vertical lines drawn to determine the position of any point in the cartesian plane?

Write the answer of the following question : What is the name of horizontal and vertical lines drawn to determine the position of any point in the cartesian plane ?

A person with myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?

A rectangular loop PQRS made from a uniform wire has length a, width b and mass m. It is free to rotate about the arm PQ, which remains hinged along a horizontal line taken as the y-axis (see figure). Take the vertically upward direction as the z-axis. A uniform magnetic field vec(B) = (3 hat(i) + 4hat(k)) B_(0) exists in the region. The loop is held in the x-y plane and a current I is passed through it. The loop is now released and is found to stay in the horizontal position in equilibrium What is the direction of the current I in PQ?

What is Accomodation of eye? Write various defects of vision and their cause. How the eye of person suffering from nearsightedness and farsightedness may be corrected ?