Question
Name the material which is the best conductor of electricity.

Answer

Silver metal.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Describe the nature of image formed when the object is placed at a distance of 20cm from a concave mirror of focal length 10cm.
An air-conditioner of 3.2kW power rating is connected to a domestic electric circuit having a current rating of 10A. The voltage of power supply is 220V. What will happen this air-conditioner is switched on? Explain your answer.
Describe how you could demonstrate that white light is composed of a number of colours.
The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below –
I (amperes)0.51.02.03.04.0
V (volts)1.63.46.710.213.2
Plot a graph between V and I and calculate the resistance of that resistor.
How could you find the focal length of a convex lens rapidly but approximately?
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
The diagram given alongside shows a ray of light entering a rectangular block of glass:
  1. Copy the diagram and draw the normal at the point of entry.
  2. Draw the approximate path of the ray of light through the glass block and out of the other side.
Identify the device used as a spherical mirror or lens in following cases, when the image formed is virtual and erect in each case.

Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object.

Your eye contains a convex lens. Why is it unwise to look at the sun?
Which is refracted most by a prism: red light or violet light? Explain why?