The inside of a vacuum flask is usually coated with silver to reduce heat loss by

Similar Questions

Which of the following condition is necessary for the occurrence of total internal reflection of lig...

The length of mercury thread when it is at 0°C, 100°C and at an unknown temperature \(\theta...

A block of wood of density 0.6 gcm$^{-3}$, weighing 3.06N in air, floats freely in a liquid of den...

Which of the following pairs of light rays shows the widest separation in the spectrum of white ligh...

An electric heater with a p.d of 240 V connected across its terminals has a total resistance of 960�...

A car takes off from rest and covers a distance of 80m on a straight road in 10s. Calculate the magn...

Which of the following is not luminous object? ...

When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50...

Ice cubes are added to a glass of warm water. The glass and water are cooled by ...

A series RLC circuit is said to resonate, when ...