List of top Questions asked in KCET- 2026

A car covers the first half of the distance between two places at 40 km/h and another half at 50 km/h. The average speed of the car is
In which of the following figures, diode is reverse biased?
An electron transition takes place from excited state to ground state in hydrogen atom, then
The critical angle for a monochromatic light going from medium A to medium B is \(\theta\). If the speed of light in medium A is V, then the speed of light in medium B is
The radius of first orbit in hydrogen atom is 5.3 \(\times\) 10\(^{-11}\) m. The kinetic energy E\(_K\), potential energy E\(_P\) and total energy E\(_T\) of electron in first orbit are
Bohr's second postulate implies quantisation of
In Young's double slit experiment, how many maxima can be seen on a screen (including central maxima) if d = \(\frac{5\lambda}{2}\) (where \(\lambda\) is wavelength of light and d is distance between the two slits).
What range of electromagnetic spectrum is considered as light?
A small town with a demand of 900 kW of electric power at 220 V is situated 20 km away from an electric power generating station. The two-wires line has resistance per unit length of \( 5 \times 10^{-4} \ \Omega \text{m}^{-1} \). The town gets power from the line through 45000 V to 220 V stepdown transformer at a substation in the town. The line power loss in the form of heat is
Match the following Maxwell's equations: (The symbols used here have their usual meanings)
With reference to the figure shown below, match the following:
The direction of a ray of light incident on a concave mirror is shown by PQ, while direction in which the ray would travel after reflection is shown by four rays marked as A, B, C and D as shown in the figure. Which of the four rays correctly shows the direction of the reflected ray?
In a circuit containing a pure resistor connected to an AC source,
A light bulb rated 100 W is connected to an AC source of 220 V, 50 Hz. The rms current through the bulb is
Variation of photoelectric current with anode potential is shown below. Choose the correct option (V\(_0\) = stopping potential).
In Faraday-Henry's experiment, a coil is connected to a galvanometer. For the deflection of pointer in the galvanometer, which of the following statement/s is/are WRONG?
The pointer in the galvanometer deflects -
(a) When the bar magnet is moved towards the stationary coil along its axis
(b) When the bar magnet is moved away from the stationary coil along its axis
(c) When the coil is moved towards the stationary bar magnet along its axis
(d) When the coil and the magnet are moved without relative motion between them
In the figure shown, the conductor PQ of length \(l\) is moved from \(x = 0\) to \(x = b\) and then up to \(x = 2b\) with a constant velocity \(\vec{v}\). A uniform magnetic field \(\vec{B}\) is perpendicular to the plane of the paper and extends from \(x = 0\) to \(x = b\) and it is zero from \(x>b\). The magnitude of emf induced in the conductor is
If a paramagnetic bar is brought near a bar magnet, then it is
Biot-Savart law indicates that an electron moving with a velocity \( \vec{V} \) produces a magnetic field \( \vec{B} \) around it such that
Pick out the WRONG statements about magnetic substances (\(\chi\) = magnetic susceptibility) (\(\mu_r\) = relative permeability).
I. Substances with \(-1 \le \chi<0\) are diamagnetic
II. Substances with \(\chi \gg 1\) are paramagnetic
III. Substances with \(\chi \ll 1\) are ferromagnetic
IV. Substances with \(\mu_r \gg 1\) are ferromagnetic
Work function of the metal is
A point charge is placed in a moving train. A passenger A sitting in the train and person B on the ground observe the fields due to this charge. Then
A proton, an electron and an \(\alpha\)-particle enter at right angles to a uniform magnetic field with the same velocity. If R\(_p\), R\(_e\) and R\(_\alpha\) are the radii of circular paths of these particles, then
In the figure, the values of currents I\(_1\), I\(_2\) and I\(_3\) respectively are
The number of electrons moving per second through the filament of a lamp of 60W operating at 120V is nearly (e = 1.6 \(\times\) 10\(^{-19}\) C) \textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore\textunderscore