The working of optical instruments like camera, microscope, telescope, etc. having glass lenses is based on a phenomenon of light. Identify the phenomenon.
- AReflection
- BRefraction
- CDispersion
- DScattering
The working of optical instruments like camera, microscope, telescope, etc. having glass lenses is based on a phenomenon of light. Identify the phenomenon.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A magnet is placed in iron powder and then taken out, then maximum iron powder is at
|
(a) Some away from north pole |
(b) Some away from south pole |
|
(c) The middle of the magnet |
(d) The end of the magnet |
A light ray is incident by grazing one of the face of a prism and after refraction ray does not emerge out, what should be the angle of prism while critical angle is C
|
(a) Equal to 2C |
(b) Less than 2C |
(c) More than 2C |
(d) None of the above |
The focal lengths for violet, green and red light rays are
and
respectively. Which of the following is the true relationship
|
(a) |
(b) |
(c) |
(d) |