In the Young's double slit experiment, if the phase difference between the two waves interfering at a point is ∅, the intensity at that point can be expressed by the expression (Where A and B depend upon the amplitudes of the two waves)
|
(a) I = |
(b) I = |
(c) I = A + Bcos |
(d) I = A + B Cos∅ |
(d) I = A + B Cos∅
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A frog can be deviated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as
|
(a) Paramagnetic |
(b) Diamagnetic |
(c) Ferromagnetic |
(d) Antiferromagnetic |
The wavelength of 
line for an element of atomic number 43 is 
. Then the wavelength of line for an element of atomic number 29 is
|
(a) |
(b) |
(c) |
(d) |
Mixed 
and 
ions (mass of 
and that of 
beam passes a region of constant perpendicular magnetic field. If kinetic energy of all the ions is same then
|
(a) |
|
(b) |
|
(c) All the ions will be deflected equally |
|
(d) No ions will be deflected |
What is the current (i) in the circuit as shown in figure
|
(a) 2 A |
(b) 1.2 A |
(c) 1 A |
(d) 0.5 A |
In an interference experiment, the spacing between successive maxima or minima is (Where the symbols have their usual meanings)
|
(a) |
(b) |
(c) |
(d) |
100 mA current gives a full scale deflection in a galvanometer of 2Ω resistance. The resistance connected with the galvanometer to convert it into a voltmeter to measure 5V is
|
(a) 98 Ω |
(b) 52 Ω |
(c) 50 Ω |
(d) 48 Ω |
The coefficient of self inductance of a solenoid is 0.18 mH. If a crode of soft iron of relative permeability 900 is inserted, then the coefficient of self inductance will become nearly
|
(a) 5.4 mH |
(b) 162 mH |
(c) 0.006 mH |
(d) 0.0002 mH |
In which of the following the final image is erect?
