In the given figure, equivalent resistance between A and B will be
|
(a) |
(b) |
(c) |
(d) |
In the given figure, equivalent resistance between A and B will be
|
(a) |
(b) |
(c) |
(d) |
(a)
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Two opposite and equal charges 4 ×
when placed 2
cm away, form a dipole. If this dipole is placed in an external electric field 4
, the value of maximum torque and the work done in rotating it through 180° will be
|
(a) 64 |
(b) 32 |
|
(c) 64 |
(d) 32 |
Light wave enters from medium 1 to medium 2. Its velocity in 2nd medium is double from 1st. For total internal reflection the angle of incidence must be greater than
|
(a) 30o |
(b) 60 o |
(c) 45 o |
(d) 90 o |
A thin mica sheet of thickness 2 and refractive index μ = 1.5 is introduced in the path of the first wave. The wavelength of the wave used is 5000 Å. The central bright maximum will shift
|
(a) 2 fringes upward |
(b) 2 fringes downward |
(c) 10 fringes upward |
(d) None of these |
Mutual inductance of two coils can be increased by
|
(a) Decreasing the number of turns in the coils |
|
(b) Increasing the number of turns in the coils |
|
(c) Winding the coils on wooden core |
|
(d) None of the above |