MCQ
Metals are good conductors because:
- Aouter electrons are strongly bound to the atom
- Bouter electrons are loosely bound to the atom
- Cinner electrons are loosely bound to the atom
- Dprotons can detach from the nucleus and conduct electricity
✓
Answer
- outer electrons are loosely bound to the atom
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A circular loop placed in a plane perpendicular to the plane of paper carries a current when the key is ON. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anti-clockwise and clockwise respectively. The magnetic field lines point from B to A. The N-pole of the resultant magnet is on the face close to:
A magnet attracts:
- Plastics.
- Any metal.
- Aluminium.
- Iron and steel.
A solar cooker may not cook food if.
- The solar cooker is not placed in the shade.
- The glass sheet cover of solar cooker is not closed.
- A convex mirror reflector is not used.
- The food containers of insulting material are not used.
A student says that the resistance of two wires of same length and same area of cross section is same. This statement is correct if
A magnetic field exerts no force on:
- An electrical charge moving perpendicular to its direction...
- An unmagnetised iron bar.
- A stationary electric charge.
- A magnet.
An electric generator converts:
- Electrical energy into mechanical energy.
- Mechanical energy into heat energy.
- Electrical energy into chemical energy.
- Mechanical energy into electrical energy.
Work done to move 1 coulomb charge from one point to another point on a charged conductor having potential 10 volt is:
What happens when white light passes through a glass prism:
Which of the following lenses would you prefer to use while reading small letters found in a dictionary?
Long-sightedness: Hypermetropia Short-sightedness: