MCQ
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
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The variation of the intensity of magnetisation (I) with respect to the magnetising field (H) in a diamagnetic substance is described by the graph

|
(a) OD |
(b) OC |
(c) OB |
(d) OA |
The critical angle for diamond (refractive index = 2) is
|
(a) About 20° |
(b) 60° |
(c) 45° |
(d) 30° |
$\text{n}\propto\text{size of u}$
$\text{n}\propto\text{u}^2$
$\text{n}\propto\sqrt{\text{u}}$
$\text{n}\propto\frac{1}{\text{u}}$