Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion : X-ray travel with the speed of light.
Reason : X-rays are electromagnetic rays.
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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. |
A proton and a deutron both having the same kinetic energy, enter perpendicularly into a uniform magnetic field B. For motion of proton and deutron on circular path of radius 
and 
respectively, the correct statement is
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(a) |
(b) |
(c) |
(d) |
For copper-iron (Cu-Fe) couple, the thermo e.m.f. (temperature of cold junction = 0℃) is given by E = (14θ – 0.02
)μV. The neutral temperature will be
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(a) 350 ℃ |
(b) 350 K |
(c) 560℃ |
(d) 560 K |
Four wires AB, BC, CD, DA of resistance 4 ohm each and a fifth wire BD of resistance 8 ohm are joined to form a rectangle ABCD of which BD is a diagonal. The effective resistance between the points A and B is
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(a) 24 ohm |
(b) 16 ohm |
(c) |
(d) |
If a resistance 
is connected in parallel with the resistance R in the circuit shown, then possible value of current through R and the possible value of will be
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(a) |
(b) I, 2R |
(c) |
(d) |
