Which of the following organisms possesses a cell wall?

An electric potential difference will be induced between the ends of the conductor shown in the diagram when the conductor moves in the direction:

Charge $q$ is uniformly distributed over a thin half ring of radius $R$. The electric field at the centre of the ring is

Which of the following is the correct order for basic strength?

The value of $a$ for which the system of equations $a^3x + (a + 1)^3y + (a + 2)^3z = 0$,$ax + (a + 1)y + (a + 2)z = 0$,$x + y + z = 0$ has a non-zero solution is

Identify the correct statement among the following options: