- APerpendicular to the field.
- BFrom stronger to the weaker parts of the field.
- CFrom weaker to the stronger parts of the field.
- DNone of these.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The length of the compound microscope is 14 cm. The magnifying power for relaxed eye is 25. If the focal length of eye lens is 5 cm, then the object distance for objective lens will be
|
(a) 1.8 cm |
(b) 1.5 cm |
(c) 2.1 cm |
(d) 2.4 cm |
Two short magnets having magnetic moments in the ratio 27 : 8, when placed on opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12 m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is
|
(a) 0.06 m |
(b) 0.08 m |
(c) 0.12 m |
(d) 0.18 m |
Which of the following statement(s) is/(are) correct
|
(a) The rest mass of a stable nucleus is less than the sum of the rest masses of its separated nucleons |
|
(b) In nuclear fission, energy is released by fragmentation of a very heavy nucleus |
|
(c) The rest mass of a stable nucleus is greater than the sum of the rest masses of its separated nucleons. |
|
(d) a, b |
The graph between wave number () and angular frequency (w) is
|
(a) |
(b) |
(c) |
(d) |
The attenuation in optical fibre is mainly due to
|
(a) Absorption |
(b) Scattering |
|
(c) Neither absorption nor scattering |
(d) Both (a) and (b) |
The wavelength of most energetic X-rays emitted when a metal target is bombarded by 40KeV electrons, is approximately (h = 6.63
)
|
(a) 300 Å |
(b) 10 Å |
(c) 4 Å |
(d) 0.31 Å |