MCQ
Which curve may best represent the current deflection in a tangent galvanometer
- A$A$
- ✓$B$
- C$C$
- D$D$
✓
Answer
Correct option: B.
$B$
b
(b)$i \propto \tan \theta $
(b)$i \propto \tan \theta $
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$(A)$ Line spectra is due to atoms in gaseous state:
$(B)$ Band spectra is due to molecules:
→$(B)$ Band spectra is due to molecules:
A hydrogen atom in its ground state is irradiated by light of wavelength $970 \mathring A$. Taking $h c / e=1.237 \times 10^{-6} \mathrm{eV} \mathrm{m}$ and the ground state energy of hydrogen atom as $-13.6 \mathrm{eV}$, the number of lines present in the emission spectrum is
→An electric heater is heated by de and ac respec- tively. The potential difference applied across the ends of heater for both ac and de is same. Heat gener- ated per second will be more:
When a metal is irradiated by light having wavelength $\lambda (\lambda < \lambda_0)$, all the photoelectron emitted are bent in a circle of radius $r$ by a magnetic of flux density $B_0$. Find the $\frac{1}{\lambda_0}$ where $\lambda_0$ is thershold wavelength.
→The back $e.m.f$. induced in a coil, when current changes from $1$ ampere to zero in one milli second, is $4$ volts, the self inductance of the coil is
→The time period of a thin bar magnet in earth’s magnetic field is T. If the magnet is cut into two equal parts perpendicular to its length, the time period of each part in the same field will be
A current of $i$ ampere is flowing through each of the bent wires as shown the magnitude and direction of magnetic field at $O$ is
→A parallel plate capacitor after charging is kept connected to a battery and the plates are pulled apart with the help of insulating handles. Now which of the following quantities will decrease?
Two identical thin plano-convex glass lenses (refractive index $1.5$) each having radius of curvature of $20\,\, cm$ are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index $1. 7$ . The focal length of the combination is.......$cm$
→A parallel plate capacitor carries a charge $q$. The distance between the plates is doubled by application of a force. The work done by the force is
→