Magnetic Effects of Electric Current — Science STD 10 — Question

Fleming's left hand rule is used to find the direction of induced current. [True/False]

A wire with a green insulation is usually the live wire of an electric supply.

Scattering of light is inversely proportional to the fourth power of wavelength. [True/ False]

Force on a charge is maximum when the velocity and magnetic field are in perpendicular direction. [True/False]

Both concave and convex mirror send the reflected light at the same angle as the angle of incidence on the other side of the principal axis. [True/ False]

State whether the following statements are true or false:

1. The scattering away of red light makes the sky appear blue during the day time.
2. The scattering away of blue light makes the sun appear red at sunset.

State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current will be parallel straight lines.

State whether the following statement is true or false:
The planets twinkle at night due to atmospheric refraction of light.

When resistors are connected in parallel, the sum of the currents in them is the current drawn from cell. [True/ False]

State whether the following statements are true or false,
An electric motor converts mechanical energy into electrical energy.