- Aon the wide surface below
- ✓at the top
- Con the entire surface
- Donly on the top surface
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A person is suffering from the defect astigmatism. Its main reason is
|
(a) Distance of the eye lens from retina is increased |
|
(b) Distance of the eye lens from retina is decreased |
|
(c) The cornea is not spherical |
|
(d) Power of accommodation of the eye is decreased |
A ray of light is incident on a transparent glass slab of refractive index 1.62. The reflected and the refracted rays are mutually perpendicular. The angle of incidence is
|
(a) 58.3o |
(b) 50o |
(c) 35o |
(d) 30o |
A simple microscope has:
In ballistic galvanometer, the frame on which the coil is wound is non-metallic to
|
(a) Avoid the production of induced e.m.f. |
(b) Avoid the production of eddy currents |
|
(c) Increase the production of eddy currents |
(d) Increase the production of induced e.m.f. |
In the figure a carbon resistor has bands of different colours on its body as mentioned in the figure. The value of the resistance is
|
(a) 2.2 k W |
(b) 3.3 k W |
(c) 5.6 k W |
(d) 9.1 k W |
Vibration magnetometer before use, should be set
| (a) In magnetic meridian | (b) In geographical meridian |
| (c) Perpendicular to magnetic meridian | (d) In any position |