Physics
Which of the following device is most efficient for lighting purpose:
LED, CFL, Fluorescent tube light, Electric bulb.
Related Questions
Assertion (A) : Longer wires have greater resistance and the smaller wires have lesser resistance.
Reason (R) : Resistance of a wire increases with increase in temperature.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
State the first traditional electric device to be used for home lighting.
State two ways to save energy.
How does proper insulation of home save energy?