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Semiconductor Devices
access_time 2022-12-25T10:27:03.836Z face Sonika Agarwal
Semiconductor Devices Semiconductors are the materials whose conductivity and resistivity lie in between metals and insulators When temperature higher than zero degree Kelvin some of the electrons are excited from valence band to conduction band creating an equal number of holes in the valence band ...
Dual Nature of Radiation and Matter
access_time 2022-12-25T10:19:44.237Z face Sonika Agarwal
Dual Nature of Radiation and Matter Photo Electric Effect The phenomenon of photoelectric effect is discovered by Hertz in 1887 When the light of certain frequency is allowed to fall on a metal surface and electrons are ejected from the metal surface this phenomenon is called photoelectric effect Or...
Test Series for Class 9 Maths
access_time 2022-12-23T15:22:47.341Z face Sonika Agarwal
Mock Test Series for Maths Number System Mutiple choice questions 1➤ What is value of 1/√2 ⓐ √2/2 ⓑ 1/2 ⓒ 2/4 ⓓ None 2➤ If a denominator divides a numerator completely it is ⓐ Terminating Decimal ⓑ Irrational ⓒ Non terminating Decimal ⓓ None 3➤ 1/3 is terminating decimal or non terminating decimal ⓐ...
Life Process Class 10 Notes
access_time 2022-12-03T06:33:51.842Z face Sonika Agarwal
Life Process- Important Points To Remember Que What are the autotrophic nutrition Ans Intake of simple inorganic materials from the environment and using an external energy source like the sun to synthesise complex high-energy organic material is called autotrophic nutrition Que What is heterotrophi...
Control and Coordination
access_time 2022-12-03T06:10:16.562Z face Sonika Agarwal
Control and Coordination Que - Why pituitary gland is called master gland ? Ans - Pituitary gland is called master gland because it controls and coordinates secretion of all other glands Que -What is stimulus? Ans - Something that brings about a response in an organism is called stimulus Que - What ...