- Real.
- Virtual.
- Erect.
- Inverted.
Explanation:
The retina acts as a screen in the eye; only real, inverted images can be obtained on the screen.
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$\text{v}\geq\text{v}_0$
$\text{v}>2\text{v}_0$
$\text{v}<\text{v}_0$
$\text{v}<\frac{\text{v}_0}{2}$
What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5mm
|
(a) 1.694 |
(b) 4.529 |
(c) 9.281 |
(d) 12.981 |
The idea of the quantum nature of light has emerged in an attempt to explain
|
(a) Interference |
(b) Diffraction |
|
(c) Radiation spectrum of a black body |
(d) Polarisation |
When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between any two of diametrically opposite points will be
|
(a) |
(b) |
(c) 4R |
(d) |
The valence of the impurity atom that is to be added to germanium crystal so as to make it a N-type semiconductor, is
|
(a) 6 |
(b) 5 |
(c) 4 |
(d) 3 |