The photoelectric effect shows that the energy required to release the electrons from the surface of the metal depends on the frequency of the... View Article
The magnetic compass is a simple device, which has been used from the ancient times by the sailors and other travellers to find directions. A... View Article
Hypermetropia is also referred to as hyperopia or long-sightedness or far-sightedness. Hypermetropia is the condition of the eyes where the image... View Article
The angle formed due to two lateral faces of the prism is known as the angle of prism. The two lateral faces are from where the light enters... View Article
The differences between clinical and laboratory thermometer are as follows: Clinical thermometer (a) Temperature range is 350 to 420C (b) Used to... View Article
Thermal conductivity is defined as the transportation of energy due to the random movement of molecules across the temperature gradient. In... View Article
Given, Aluminium crystallises in a cubic close-packed structure. Its metallic radius is 125 pm. (i) Length of the side of unit cell for cubic... View Article
Answer: B. Is always negative The temperature coefficient of resistance of a semiconductor is always negative. The temperature coefficient... View Article
