Explanation:
Isotopes of the same element must have same number of protons but different number of neutrons.
Also the isotopes of same element are located at same place in the periodic table and undergo same chemical reaction.
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The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is
|
(a) |
(b) |
(c) |
(d) |
Four capacitors are connected as shown in the figure. Their capacities are indicated in the figure. The effective capacitance between points x and y is (in μF)
|
(a) |
(b) |
(c) |
(d) 2 |
Which of the following atoms has the lowest ionization potential
|
(a) |
(b) |
(c) |
(d) |
A beam of plane polarized light falls normally on a polarizer of cross sectional area 3 
. Flux of energy of incident ray in 10–3 W. The polarizer rotates with an angular frequency of 31.4 rad/sec. The energy of light passing through the polarizer per revolution will be
|
(a) 10–4 Joule |
(b) 10–3 Joule |
(c) 10–2 Joule |
(d) 10–1 Joule |
In Young's double slit experiment, the fringe width is 1 
if the distance between the slit and screen is doubled and the distance between the two slit is reduced to half and wavelength is changed from 6.4 
to , 4.0 
, the value of new fringe width will be
|
(a) 0.15 |
(b) 2.0 |
(c) 1.25 |
(d) 2.5 |
In 
solution when electric current equal to 2.5 faraday is passed, the gm equivalent deposited on the cathode is
|
(a) 1 |
(b) 1.5 |
(c) 2 |
(d) 2.5 |
125 identical drops each charged to the same potential of 50 volts are combined to form a single drop. The potential of the new drop will be
|
(a) 50 V |
(b) 250 V |
(c) 500 V |
(d) 1250 V |
