Explanation:
When light is passed through a double slit opening, light from the two slits interfere at different points in the screen, forming alternating bright and dark fringes due to constructive and destructive interference respectively. However the intensities of higher order bands is slightly diminished.
Such an arrangement was first studied by Young, and has been since called Young's Double Slit Setup.
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The line on the earth's surface joining the points where the field is horizontal is
| (a) Magnetic meridian | (b) Magnetic axis | (c) Magnetic line | (d) Magnetic equator |
Two parallel beams of electrons moving in the same direction produce a mutual force
|
(a) Of attraction in plane of paper |
|
(b) Of repulsion in plane of paper |
|
(c) Upwards perpendicular to plane of paper |
|
(d) Downwards perpendicular to plane of paper |
A deutron is bombarded on 
nucleus and a-particle is emitted. The product nucleus is
|
(a) |
(b) |
(c) |
(d) |
$=\text{R}$
$\le\text{R}$
$>\text{R}$
$\ge\text{R}$
In the following circuit find I1 and I2
|
(a) 0, 0 |
(b) 5 mA, 5 mA |
(c) 5 mA, 0 |
(d) 0, 5 mA |
The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be
|
(a) 12.4 eV |
(b) 6.2 eV |
(c) 100 eV |
(d) 200 eV |
