4.White light is passed through sodium vapours contained in a thin walled glass flask and the transmitted light is examined with the help of a spectrometer. The spectrum so obtained is:
Absorption spectrum
Solar Spectrum
Band Spectrum
Band Spectrum
A.
Absorption spectrum
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5.Binding energy of a nucleus is of the order of:
Electron volt (eV)
Kilo-electron volt (KeV)
Mega electron volt (MeV)
Mega electron volt (MeV)
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6.A point charge of 5 x 10-6 C experiences a force of 2 x 10-3 N when kept in a uniform electric field of intensity E. Find E.
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7.Which conservation principle is involved in Kirchoffs first law of electric circuits?
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8.Write an expression of magnetic flux density ‘B’ at a point in end - on position or an axial position of a magnetic dipole, (Derivation not required.)
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9.In a moving coil galvanometer, what is meant by a radial magnetic field?
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10.Variation of alternating current T with time ‘t’ is shown in the graph below :
Multiple Choice Questions
Short Answer Type
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