Light – Reflection and Refraction — Science STD 10 — Question

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

Convex mirror and convex lens always form virtual image. [True/ False]

One can identify the nature of a mirror from the nature of the image it forms. [True/ False]

State whether the following statement is true or false:
A diverging mirror is used as a rear-view mirror.

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:
An electric motor converts mechanical energy into electrical energy.

Looming happens due to total internal reflection. [True/ False]

State whether the following statement is true or false:
A student says that we can see an object because light from our eyes is reflected back by the object

When resistors are connected in series, the sum of the currents in them is the current drawn from cell. [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.