In order to increase the angular magnification of a simple microscope, one should increase:
- AThe object size
- BThe aperture of the lens
- CThe focal length of the lens
- DThe power of the lens
In order to increase the angular magnification of a simple microscope, one should increase:
Explanation:
When the image is formed at infinity
m = Df = DPm = Df = DP
when the image is formed at the near point
m = (1+Df) = 1 + DP
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A battery of 6 volts is connected to the terminals of a three metre long wire of uniform thickness and resistance of the order of 100 Ω. The difference of potential between two points separated by 50 cm on the wire will be
|
(a) 1 V |
(b) 1.5 V |
(c) 2 V |
(d) 3 V |
In a vibration magnetometer, the time period of a bar magnet oscillating in horizontal component of earth's magnetic field is 2 sec. When a magnet is brought near and parallel to it, the time period reduces to 1 sec. The ratio H/F of the horizontal component H and the field F due to magnet will be
| (a) 3 | (b) 1/3 |
(c) |
(d) 1/ |
How should people wearing spectacles work with a microscope?