Question
The value of amplification factor from the following graph will be

Answer

(a)$\mu = - {\left( {\frac{{\Delta {V_p}}}{{\Delta {V_g}}}} \right)_{\Delta {i_p} = \,{\rm{const}}{\rm{.}}}} = \frac{{ - (80 - 60)}}{{[ - 6 - ( - 4)]}} = \frac{{20}}{2} = 10$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A movie projector forms an image $3.5m$ long of an object $35 mm$. Supposing there is negligible absorption of light by aperture then illuminance on slide and screen will be in the ratio of
A particle is moved from $(0, 0)$  to $(a, a)$  under a force $F = (3\hat i + 4\hat j)$ from two paths. Path $1$ is $OP$ and path $2$  is $OQP$ . Let $W_1$ and $W_2$ be the work done by this force in these two paths respectively. Then
Conside ranequi- convex lens of glass $\left( {\mu  = \frac{3}{2}} \right)$ If temperature of lens is increased by $40\, ^oC$ then its focal length remains same. The coefficient of linear expansion of glass is $2.5 \times 1 0^{-4} / \,^oC$ . Calculate change in refractive index of glass on increasing temperature by $40\,^o C$.
An electron is moving along $+x$ direction with a velocity of $6 \times 10^{6}\, ms ^{-1}$. It enters a region of uniform electric field of $300 \,V / cm$ pointing along $+ y$ direction. The magnitude and direction of the magnetic field set up in this region such that the electron keeps moving along the $x$ direction will be
An arrangement of spring, strings, pulley and masses is shown in the figure below.The pulley and the strings are massless and $M>m$. The spring is light with spring constant $k$. If the string connecting $m$ to the ground is detached, then immediately after detachment
A capacitor with plate separation $d$ is charged to $V$ volts. The battery is disconnected and a dielectric slab of thickness $\frac{d}{2}$ and dielectric constant ' $2$ ' is inserted between the plates. The potential difference across its terminals becomes
When a body is spinning on its axis in absence of any external torque, then choose the wrong statement
If electronic charge $e$, electron mass $m$, speed of light in vacuum $c$ and Planck 's constant $h$ are taken as fundamental quantities, the permeability of vacuum $\mu _0$ can be expressed in units of
Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as

Reason $R$.

Assertion $A :$ An electron microscope can achieve better resolving power than an optical microscope.

Reason $R$ : The de Broglie's wavelength of the electrons emitted from an electron gun is much less than wavelength of visible light.

In the light of the above statements, choose the correct answer from the options given below

A uniform force of $(3\hat i + \hat j)$ newton acts on a particle of mass $2\, kg.$ Hence the particle is displaced from position $(2\hat i +\hat k)$ metre to position $(4\hat i+3\hat j-\hat k)$ metre. The work done by the force on the particle is ............. $\mathrm{J}$