Transistors is an important topic in the Physics section in VITEEE exam. Practising this topic will increase your score overall and make your conceptual grip on VITEEE exam stronger.
This article gives you a full set of VITEEE PYQs for Transistors with explanations for effective preparation. Practice of VITEEE Physics PYQs including Transistors questions regularly will improve accuracy, speed, and confidence in the VITEEE 2026 exam.
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VITEEE PYQs for Transistors with Solutions
1.
Alternating current cannot be measured by a D.C. ammeter because- Average value of current for complete cycle is zero
- A.C. Changes direction
- A.C. cannot pass through D.C. Ammeter
- D.C. Ammeter will get damaged.
2.
An electron (mass = \( 9 \times 10^{-31} \) kg, charge = \( 1.6 \times 10^{-19} \) C) moving with a velocity of \( 10^6 \) m/s enters a magnetic field. If it describes a circle of radius \( 0.1 \) m, then the strength of the magnetic field must be:- \( 4.5 \times 10^{-5} \) T
- \( 1.4 \times 10^{-5} \) T
- \( 5.5 \times 10^{-5} \) T
- \( 2.6 \times 10^{-5} \) T
3.
If two soap bubbles of different radii are connected by a tube:- air flows from the smaller bubble to the bigger bubble
- air flows from the bigger bubble to the smaller bubble till the sizes are interchanged
- air flows from the bigger bubble to the smaller bubble till the sizes become equal
- there is no flow of air.
4.
For a transistor, \( \alpha \) and \( \beta \) are given as \( \alpha = \frac{I_C}{I_E} \) and \( \beta = \frac{I_C}{I_B} \). Then the correct relation between \( \alpha \) and \( \beta \) will be:- \( \alpha = \frac{1 - \beta}{\beta} \)
- \( \beta = \frac{\alpha}{1 - \alpha} \)
- \( \alpha \beta = 1 \)
- \( \alpha = \frac{\beta}{1 - \beta} \)
5.
The force between two short bar magnets with magnetic moments \( M_1 \) and \( M_2 \) whose centers are \( r \) meters apart is 8 N when their axes are in the same line. If the separation is increased to \( 2r \), the force between them is reduced to:- \( 4N \)
- \( 2N \)
- \( 1N \)
- \( 0.5N \)
6.
In YDSE, how many maximas can be obtained on a screen, including central maxima, on both sides of the central fringe if \( \lambda = 3000\) Å, \( d = 5000\) Å?- 2
- 5
- 3
- 1
7.
A force \( \mathbf{F} = \alpha \hat{i} + 3 \hat{j} + 6 \hat{k} \) is acting at a point \( \mathbf{r} = 2 \hat{i} - 6 \hat{j} - 12 \hat{k} \). The value of \( \alpha \) for which angular momentum about the origin is conserved is:- \( 2 \)
- \( 0 \)
- \( 1 \)
- \( -1 \)
8.
A square frame of side \( 10 \) cm and a long straight wire carrying current \( 1A \) are in the plane of the paper. Starting from close to the wire, the frame moves towards the right with a constant speed of \( 10 \) m/s (see figure). The induced EMF at the time the left arm of the frame is at \( x = 10 \) cm from the wire is:
- \( 2 \mu V \)
- \( 1 \mu V \)
- \( 0.75 \mu V \)
- \( 0.5 \mu V \)
9.
A given ray of light suffers minimum deviation in an equilateral prism \( P \). Additional prisms \( Q \) and \( R \) of identical shape and of the same material as \( P \) are now added as shown in the figure. The ray will now suffer:
\includegraphics[width=0.5\linewidth]{31.png}- Greater deviation
- No deviation
- Same deviation as before
- Total internal reflection
10.
Equipotential surfaces are shown in the figure. The electric field strength will be:
- \( 100 \) V/m along X-axis
- \( 100 \) V/m along Y-axis
- \( 200 \) V/m at an angle \( 120^\circ \) with X-axis
- \( 50 \) V/m at an angle \( 120^\circ \) with X-axis
11.
A parallel plate air capacitor of capacitance \( C \) is connected to a cell of emf \( V \) and then disconnected from it. A dielectric slab of dielectric constant \( K \), which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?- The energy stored in the capacitor decreases \( K \) times.
- The change in energy stored is \( \frac{1}{2} C V^2 (1 - \frac{1}{K}) \).
- The charge on the capacitor is not conserved.
- The potential difference between the plates decreases \( K \) times.
12.
The de Broglie wavelength of a proton and \( \alpha \)-particle are equal. The ratio of their velocities is:- 4 : 3
- 4 : 1
- 4 : 2
- 1 : 4
13.
A Carnot engine has an efficiency of 50%. If the temperature of the sink is reduced by \( 40^\circ C \), its efficiency increases by 30%. The temperature of the source will be:
- 166.7K
- 255.1K
- 266.7K
- 367.7K
14.
An \( \alpha \)-particle of 10 MeV collides head-on with a copper nucleus (\( Z = 29 \)) and is deflected back. The minimum distance of approach between the centers of the two is:- \( 8.4 \times 10^{-15} \) cm
- \( 8.4 \times 10^{-15} \) m
- \( 4.2 \times 10^{-15} \) m
- \( 4.2 \times 10^{-15} \) cm
15.
If \( E \) and \( H \) represent the intensity of electric field and magnetizing field respectively, then the unit of \( \frac{E}{H} \) will be:- ohm
- mho
- joule
- newton
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