Physics
A bar magnet is used to pick up an iron nail. At which parts of the nail it is easiest for the magnet to pick it up?
- At end X
- At mid-point Y
- At end Z
- Same at all points
Related Questions
The focal length does not depend on
- refractive index
- radius of curvature
- direction of light
- None of the above
If current through a resistance is doubled and its resistance made one-fourth, then the value of power dissipation will
- remain same
- double
- become 4 times
- become 1⁄4 time
For which position of the object in front of convex lens, the image distance will be negative ?
A ray of light suffers refraction through an equilateral prism. The deviation produced by the prism does not depend on the
- angle of incidence
- colour of light
- material of prism
- size of prism