Physics Test - ...

An electron is moving in a circle of radius 6π cm in anticlockwise direction in a horizontal plane with an increasing speed. Then,

P.E. (U), Conservative force and various equilibrium conditions possible are given in the column 1,column 2 ,and column 3 respectively.

In which case a body displaced slightly from equilibrium position has no tendency to return or move away from original position?

Various graphs are drawn between the current and voltage for an a.c. circuit containing 'R' or 'L' or 'C' or any combination of R, L and C.


In which case is the current in the circuit less than the maximum current and the frequency of circuit is less than the resonant frequency?

Various graphs are drawn between the current and voltage for an a.c. circuit containing 'R' or 'L' or 'C' or any combination of R, L and C.


In which case the power consumed in the circuit is zero?

Various graphs are drawn between the current and voltage for an a.c. circuit containing 'R' or 'L' or 'C' or any combination of R, L and C.


In which case the power consumed is maximum?

In an interference experiment shown in the figure, the narrow slits S₁ and S₂ are illuminated with coherent sources, each of frequency 10¹⁴ Hz. The initial phase difference between the sources is zero. The slits are separated by a distance d = 3.0 mm. The resultant intensity is I (θ) on the screen (measured as a function of θ, where θ is defined as shown). If I0 is the maximum intensity, then I (θ) for θ between 0^o and 90^o (both inclusive) is given by

Consider two magnets of magnetic dipole moment 'M' and length 'l' (<< r) placed with centre to centre distance 'r' in the configuration shown in column I. Force between them is given in column II and the corresponding potential energy is given column III. Consider the black end as the north pole.

Match columns II and III with column I.

For an ideal diatomic gas, the P-V diagrams are shown. The various quantities indicated in the columns are calculated. The relative values are also given.


In which graph, the change of internal energy is 225 J and the heat absorbed is 270 J?