- ✓Increases
- BDecreases
- CRemains constant
- DNone of these
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The image of an extended object, placed perpendicular to the principal axis of a mirror, will be erect if:
Motion of a moving electron is not affected by
|
(a) An electric field applied in the direction of motion |
|
(b) Magnetic field applied in the direction of motion |
|
(c) Electric field applied perpendicular to the direction of motion |
|
(d) Magnetic field applied perpendicular to the direction of motion |
The kinetic energy of an electron is 5 eV. Calculate the de-Broglie wavelength associated with it (h = 6.6 × 10–34 Js, me = 9.1 × 10–31 kg)
|
(a) 5.47 Å |
(b) 10.9 Å |
(c) 2.7 Å |
(d) None of these |

X-rays region lies between
| (a) Short radiowave and visible region | (b) Visible and ultraviolet region |
| (c) Gamma rays and ultraviolet region | (d) Short radiowave and long radiowave |
A galvanometer of resistance 36 W is changed into an ammeter by using a shunt of 4 W. The fraction f0 of total current passing through the galvanometer is
|
(a) |
(b) |
(c) |
(d) |