- AIsotopes
- BIsobars
- CIsotones
- DNone of the above
Explanation:
In a Bainbridge mass spectrometer positive rays of the same element produce different traces. The traces correspond to isotopes. Isotopes are atoms of same element. They have same atomic number (nuclear charge) but different mass number (number of neutrons). Positive rays (or anode rays or canal rays) contains ions obtained by knocking out electrons from gaseous atoms.
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The band spectra (characteristic of molecular species) is due to emission of radiation
|
(a) Gaseous state |
(b) Liquid state |
(c) Solid state |
(d) All of three states |
Figure shows three points A, B and C in a region of uniform electric field . The line AB is perpendicular and BC is parallel to the field lines. Then which of the following holds good. Where
and
represent the electric potential at points A, B and C respectively
|
(a) |
(b) |
(c) |
(d) |
A thin glass (refractive index 1.5) lens has optical power of -5D in air. It's optical power in a liquid medium with refractive index 1.6 will be
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(a) 25 D |
(b) – 25 D |
(c) 1 D |
(d) None of these |
Assertion : Torque on the coil is the maximum, when coil is suspended in a radial magnetic field.
Reason : The torque tends to rotate the coil on its own axis.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |