- ACast iron.
- BSteel.
- CSoft iron.
- DStainless steel.
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White light is passed through a prism whose angle is 5°. If the refractive indices for rays of red and blue colour are respectively 1.64 and 1.66, the angle of deviation between the two colours will be
|
(a) 0.1 degree |
(b) 0.2 degree |
(c) 0.3 degree |
(d) 0.4 degree |
In an amplitude modulated wave for audio frequency of 500 cycle/second, the appropriate carrier frequency will be
|
(a) 50 cycles/sec |
(b) 100 cycles/sec |
(c) 500 cycles/sec |
(d) 50,000 cycles/sec |
Whenever light travels from denser medium to a rarer medium:
For ferromagnetic material, the relative permeability (
, versus magnetic intensity (H) has the following shape
|
(a)
|
(b)
|
(c)
|
(d)
|
$\frac{1}{\text{v}}-\frac{1}{\text{u}}=\frac{1}{\text{uf}}$
$\frac{1}{\text{v}^2}-\frac{1}{\text{u}}=\frac{1}{\text{f}}$
$\frac{1}{\text{v}-\text{t}}-\frac{1}{\text{u}+\text{t}}=\frac{1}{\text{f}}$
$\frac{1}{\text{v}}-\frac{1}{\text{u}}+\frac{\text{t}}{\text{uv}}=\frac{\text{t}}{\text{f}}$