Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

For the same value of angle of incidence, the angles of refraction in three media A, B and C are 15°, 25° and 35° respectively. In which medium would the velocity of light be minimum?

Write the value of the electric potential at the distance r from the centre of the dipole on the axis of the electric dipole of dipole moment p.

Which physical quantity has newton/ampere- meter as unit? Is it scalar quantity or vector quantity?

How does the electric flux due to a point charge enclosed by a spherical Gaussian surface get affected when its radius is increased?

What will be the shape of the wave front emitted by a light source in the form of a narrow slit?

A brick weighing 4.0kg is dropped into a 1.0m deep river from a height of 2.0m. Assuming that 80% of the gravitational potential energy is finally converted into thermal energy, find this thermal energy is calorie.

An air bubble is formed inside water. Does it act as a converging lens or a diverging lens?

The plot of the variation of potential different across a combination of three identical cells in series, versus current is shown below. What is the emf and internal resistance of each cell?

The plates of a parallel-plate capacitor are given equal positive charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and on the outer surfaces?

A small creature moves with constant speed in a vertical circle on a bright day. Does its shadow formed by the sun on a horizontal plane move in a simple harmonic motion?