List of top Physics Questions asked in GUJCET

On increasing the temperature of a conductor, for free electrons ______ increases.
The Wheatstone bridge is in balanced condition in the given figure (assume branches are 2$\Omega$, 6$\Omega$, X, and 12$\Omega$ in order), then X = ______.
The emf of a storage battery of a car is 6.0 V. If internal resistance of the battery is 0.2 $\Omega$, then maximum power drawn from the battery is ____ W.
A metal rod of length 10 cm and a rectangular cross section of 1 cm $\times$ 1/2 cm is connected to a battery across opposite faces. The resistance will be _____.
An electric dipole of dipole moment $\vec{P}$ is placed parallel to the uniform electric field of intensity $\vec{E}$. On rotating it through angle of 90° from this situation, the amount of work done is ______.
The total charge on a uniformly charged spherical shell having radius R is Q. Then electric potential at a distance $r = R/2$ from the centre of the shell ______.
A parallel plate capacitor with air between the plates has a capacitance of 1.0 pF. If the distance between the plates is made doubled and space between them is filled with dielectric substance, the capacitance becomes 2.0 pF. Then the value of dielectric constant of dielectric substance is ______.
Two infinitely long thin straight parallel wires are kept a perpendicular distance $2R$ having uniform linear charge densities $+\lambda$ and $-\lambda$ respectively. The magnitude of electric field at a mid point between two wires will be ______.
If charge $q$ is placed on one of the vertex of a cube, then total electric flux passing through the cube is ______.
A proton and a $\alpha$-particle are placed in uniform electric field. Accelerations produced in them are $a_p$ and $a_\alpha$ respectively. Then $a_p : a_\alpha$ will be ______.
Out of the following impurities, which impurity is not a trivalent?
If the output frequency of a full-wave rectifier is 100 Hz, then input frequency will be ______.
When a forward bias is applied to a p-n junction. It ______.
A 25 cm long object is placed between two mirrors forming an angle of 90°. What will be the number of images formed?
What are the dimensions of the thermal conductivity coefficient \( k \) (SI units)?
In the circuit shown, the total resistance of the series combination is 0.5Ω. If a potential difference of 15V is applied, calculate the total potential across the combination of the series connected resistors.
In a circuit with resistors and a voltage of \( V \), if a new resistor is added to the series combination, what will be the new potential?
In the diagram of two point charges \( +q \) and \( -q \), the potential at point A is given by the formula. Calculate the potential at point A if the distance between the charges is \( 2l \).
In the circuit shown, what is the voltage at point \( P \)?
If an object moves with a velocity of 1 km/s and has a mass of 0.033 kg, calculate the de Broglie wavelength of the object.
If the electric field between the plates of a capacitor with charge \( 2q \) is \( E \), then what will the electric field be when the capacitor is connected to a battery with a voltage \( E \) across the plates?
For a resistor \( R \), the potential across it is given by \( 1.6 \times 10^{-6} \, \text{C} \) of charge and a voltage across it. The electrical potential due to this charge will depend on:
What is the most commonly used energy source in everyday life?
What is the current flowing in the circuit shown? (The resistor is 100$Ω$, and the voltage is +6V and +5V).
The top and bottom parts of a cylindrical tube are in contact with each other. Which statement is correct?