- ACircles.
- BParabola.
- CStraight line.
- DEllipse.
Explanation:
A paramagnet magnet behaves like a solenoid because both contain currents in the form of circle. The magnetic field is generated by the circular motion of the electron inside the atom.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$\text{v}=\frac{\text{v}_1+\text{v}_2}{2}$
$\text{v}=\sqrt{\text{v}_1\text{v}_2}$
$\frac{2}{\text{v}}=\frac{1}{\text{v}_1}+\frac{1}{\text{v}_2}$
$\frac{1}{\text{v}}=\frac{1}{\text{v}_1}+\frac{1}{\text{v}_2}$
A metallic block has no potential difference applied across it, then the mean velocity of free electrons is T = absolute temperature of the block)
|
(a) Proportional to T |
(b) Proportional to |
|
(c) Zero |
(d) Finite but independent of temperature |
Two condensers of capacities 2C and C are joined in parallel and charged upto potential V. The battery is removed and the condenser of capacity C is filled completely with a medium of dielectric constant K. The p.d. across the capacitors will now be
|
(a) |
(b) |
(c) |
(d) |
A spectral line λ = 5000 Å in the light coming from a distant star is observed as a 5200 Å. What will be recession velocity of the star
|
(a) 1.15 |
(b) 1.15 |
(c) 1.15 |
(d) 1.15 km/sec |
