- A[L A T]
- B[L-1 A -1 T]
- C[L A-1 T-1]
- D[L-2 A T]
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion : Soft iron is used as a core of transformer.
Reason : Area of hysteresis is loop for soft iron is small.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
In an experiment, a graph was plotted of the potential difference V between the terminals of a cell against the circuit current i by varying load rheostat. Internal conductance of the cell is given by
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(a) xy |
(b) |
(c) |
(d) (x – y) |
Nuclear fission experiments show that the neutrons split the uranium nuclei into two fragments of about same size. This process is accompanied by the emission of several
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(a) Protons and positrons |
(b) a - particles |
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(c) Neutrons |
(d) Protons and a-particles |
Figure (a) shows two capacitors connected in series and joined to a battery. The graph in figure (b) shows the variation in potential as one moves from left to right on the branch containing the capacitors, if
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(a) |
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(b) |
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(c) |
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(d) The information is not sufficient to decide the relation between |
A beam of electrons and protons move parallel to each other in the same direction, then they
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(a) Attract each other |
(b) Repel each other |
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(c) No relation |
(d) Neither attract nor repel |
In the nth orbit, the energy of an electron
for hydrogen atom. The energy required to take the electron from first orbit to second orbit will be
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(a) 10.2 eV |
(b) 12.1 eV |
(c) 13.6 eV |
(d) 3.4 eV |
A pellet carrying charge of 0.5 coulombs is accelerated through a potential of 2,000 volts. It attains a kinetic energy equal to
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(a) 1000 ergs |
(b) 1000 joules |
(c) 1000 kWh |
(d) 500 ergs |