1. Match items in column 1 with items in column 2
Column 1
(A) Nuclear fusion
B) Nuclear fission
(C) β-decay
(D) Exothermic nuclear reaction
Column 2
(P) Converts some matter into energy
(Q) Generally possible for nuclei with low atomic number
(R) Generally possible for nuclei with higher atomic number
(S) Essentially proceeds by weak nuclear forces
2. A simple telescope used to view distant objects has eyepiece and objective lens of focal lengths fe and f0,
respectively. Then: match items in column 1 with column 2
Column 1
(A) Intensity of light received by lens
(B) Angular magnification
(C) Length of telescope
(D) Sharpness of image
Column 2
(P) Radius of aperture (R)
(Q) Dispersion of lens
(R) focal length f0, fe
(D) Sharpness of image
3. Match colmns 1 and 2
(A) Dielectric ring uniformly charged
(B) Dielectric ring uniformly charged rotating
with angular velocity ω
(C) Constant current in ring i0.
(D) i = i0cos ωt
Column 2
(P) Time independent electrostatic field out of system
(Q) Magnetic field
(R) Induced electric field
(S) Magnetic moment
Source: 2006 JEE
Sunday, October 11, 2009
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