Explanation:
de – Broglie hypothesis did modify Bohr’s second postulate.
This postulate of Bohr regarding the quantization of the angular momentum of an electron was further explained by Louis de Broglie.
According to de – Broglie, a moving electron in its circular orbit behaves like a particle-wave.
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n identical condensers are joined in parallel and are charged to potential V. Now they are separated and joined in series. Then the total energy and potential difference of the combination will be
|
(a) Energy and potential difference remain same |
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(b) Energy remains same and potential difference is nV |
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(c) Energy increases n times and potential difference is nV |
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(d) Energy increases n times and potential difference remains same |
The Young's experiment is performed with the lights of blue (λ = 4360 Å) and green colour (λ = 5460 Å), If the distance of the 4th fringe from the centre is x, then
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(a) x (Blue) = x (Green) |
(b) x (Blue) > x (Green) |
(c) x (Blue) < x (Green) |
(d) |
In the given network capacitance, 
and 
. What is the resultant capacitance between A and B
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(a) 2.2 μF |
(b) 3.2 μF |
(c) 1.2 μF |
(d) 4.7 μF |
In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to 3 volt. The voltage across the resistance R4 is
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(a) 0.4 V |
(b) 0.6 V |
(c) 1.2 V |
(d) 1.5 V |
What will be the height of image when an object of 2 mm is placed on the axis of a convex mirror at a distance 20 cm of radius of curvature 40 cm
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(a) 20 mm |
(b) 10 mm |
(c) 6 mm |
(d) 1 mm |
In Young's double slit experiment when wavelength used is 6000 Å and the screen is 40 cm from the slits, the fringes are 0.012 cm wide. What is the distance between the slits
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(a) 0.024 cm |
(b) 2.4 cm |
(c) 0.24 cm |
(d) 0.2 cm |
