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C and Si both have same lattice structure, having 4 bonding electrons in each. However, C is insulator whereas Si is intrinsic semiconductor. This is because C and Si both have same lattice structure C is insulator whereas Si is intrinsic semiconductor. This is because having 4 bonding electrons in each. However September 1, 2020 [...]

In a n- type semiconductor, which of the following statements is true ? In a n- type semiconductor which of the following statements is true? September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel A steel ball initially at a pressure of 10^5Pa is heated from 20C to 120C keeping its volume constant. Find the pressure inside the [...]

For a p- type semiconductor, which of the following statements is true ? For a p- type semiconductor which of the following statements is true? September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (E_(g))_(C),(E_(g))_(Si) and (E_(g))_(Ge), respectively. Which one of the following relationship is true in their case? (E_(g))_(Si) and (E_(g))_(Ge) Carbon respectively. Which one of the following relationship is true in their case? silicon [...]

Choose only false statement from the following Choose only false statement from the following September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

Two rods of different metals having the same area of cross section A are placed between the two massive walls as shown is Fig. The first rod has a length l1, coefficient of linear expansion α1 and Young’s modulus Y1. The corresponding quantities for second rod are l2,α2 and Y2. The temperature of both the [...]

In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons respectively. The material is a/an In the energy band diagram of a material shown below the open circles and filled circles denote holes and electrons respectively. The material is a/an September 1, 2020 Category: Chapter [...]

A rod of length 2 m is at a temperature of 20∘ C. find the free expansion of the rod, if the temperature is increased to 50∘C, then find stress produced when the rod is (i) fully prevented to expand, (ii) permitted to expand by 0.4mm. Y=2×10^11N/m2,α=15×10^−6/∘C. (ii) permitted to expand by 0.4mm. Y=2×10^11N/m2 A [...]

Application of a forward bias to a p-n junction Application of a forward bias to a p-n junction September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,