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Vivek Singh

Vivek Singh

HOD Physics @ Unacademy Bhilai

Former Director — Vibrant Academy | Former Faculty — Aakash Institute
In his free time, he provides career counseling on Dial Me 24/7

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Two conductors have the same resistance at 0∘C but their temperature coefficient of resistance are α1 and α2. The respective temperature coefficient of their series and parallel combinations are nearly:- Thermodynamics IIT-JEE Question

Two conductors have the same resistance at 0∘C but their temperature coefficient of resistance are α1 and α2. The respective temperature coefficient of their series and parallel combinations are nearly:- Thermodynamics IIT-JEE Question

December 20, 2024

Description Two conductors have the same resistance at 0∘C but their temperature coefficient of resistance are α1 and α2. The respective temperature coefficient of their series and parallel combinations are nearly: Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving

Two identical cylindrical vessels are kept on the ground and each contain the same liquid of density . The area of the base of both vessels is S- Mechanics IIT-JEE Question

Two identical cylindrical vessels are kept on the ground and each contain the same liquid of density . The area of the base of both vessels is S- Mechanics IIT-JEE Question

December 19, 2024

Description Two identical cylindrical vessels are kept on the ground and each contain the same liquid of density . The area of the base of both vessels is S but the height of liquid in one vessel is and in the other. When both cylinders are connected through a pipe of negligible volume very close

Given below is the plot of a potential energy function for a system, in which a particle is in one dimensional motion, while a conservative force acts on it. Suppose that mechanical energy is 8J

Given below is the plot of a potential energy function for a system, in which a particle is in one dimensional motion, while a conservative force acts on it. Suppose that mechanical energy is 8J

December 17, 2024

Description Given below is the plot of a potential energy function for a system, in which a particle is in one dimensional motion, while a conservative force acts on it. Suppose that mechanical energy is 8J Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather

An object is placed in a medium of refractive index 3. An electromagnetic wave of intensity 6*10^8 falls normally on the object and it is absorbed completely. The radiation pressure on the object would be

An object is placed in a medium of refractive index 3. An electromagnetic wave of intensity 6*10^8 falls normally on the object and it is absorbed completely. The radiation pressure on the object would be

December 17, 2024

Description An object is placed in a medium of refractive index 3. An electromagnetic wave of intensity 6*10^8 falls normally on the object and it is absorbed completely. The radiation pressure on the object would be Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather

The electric field of a plane polarized electromagnetic wave in free space at time t=0 is given by an expression. E→(x,y)=10jˆcos[(6x+8z)]. The magnetic field B→(x,z,t) is given by (c is the velocity of light- Electromagnetism, Optics IIT-JEE Question

The electric field of a plane polarized electromagnetic wave in free space at time t=0 is given by an expression. E→(x,y)=10jˆcos[(6x+8z)]. The magnetic field B→(x,z,t) is given by (c is the velocity of light- Electromagnetism, Optics IIT-JEE Question

December 16, 2024

Description The electric field of a plane polarized electromagnetic wave in free space at time t=0 is given by an expression. E→(x,y)=10jˆcos[(6x+8z)]. The magnetic field B→(x,z,t) is given by (c is the velocity of light): Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather than

The electric field of a plane electromagnetic wave is given by The corresponding magnetic field →B is then given by

The electric field of a plane electromagnetic wave is given by The corresponding magnetic field →B is then given by

December 15, 2024

Description The electric field of a plane electromagnetic wave is given by The corresponding magnetic field →B is then given by Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving a variety of problems, especially previous years’ questions. Create a

Four point charges, each of +q, are rigidly fixed at the four corners of a square planar soap film of side ‘a’. the surface tension of the soap film is γ. The system of charges and planar film are in equilibrium, and a=k[q2γ]1N, where ‘k’ is a constant. Then N is:

Four point charges, each of +q, are rigidly fixed at the four corners of a square planar soap film of side ‘a’. the surface tension of the soap film is γ. The system of charges and planar film are in equilibrium, and a=k[q2γ]1N, where ‘k’ is a constant. Then N is:

December 13, 2024

Description Four point charges, each of +q, are rigidly fixed at the four corners of a square planar soap film of side ‘a’. the surface tension of the soap film is γ. The system of charges and planar film are in equilibrium, and a=k[q2γ]1N, where ‘k’ is a constant. Then N is: Frequently Asked Questions

A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of breakdown voltage of 3.2 V. The length (PR) of the resistive wire is 20 cm. The minimum length of PQ to just glow the LED is …………. cm

A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of breakdown voltage of 3.2 V. The length (PR) of the resistive wire is 20 cm. The minimum length of PQ to just glow the LED is …………. cm

December 13, 2024

Description A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of breakdown voltage of 3.2 V. The length (PR) of the resistive wire is 20 cm. The minimum length of PQ to just glow the LED is

A coil is in the form of equilateral triangle of side ‘ a ‘. The current in the coil is I. The magnetic field at a distance ‘a’ equidistant’ from all the vertices will be

A coil is in the form of equilateral triangle of side ‘ a ‘. The current in the coil is I. The magnetic field at a distance ‘a’ equidistant’ from all the vertices will be

December 13, 2024

Description A coil is in the form of equilateral triangle of side ‘ a ‘. The current in the coil is I. The magnetic field at a distance ‘a’ equidistant’ from all the vertices will be Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus on understanding concepts rather

A ship A is moving westwards with a speed of 10km/hr and a ship B 100 km south of A, is moving northwards with a speed of 10km/hr. Find the time after which the distance between them becomes shortest.

A ship A is moving westwards with a speed of 10km/hr and a ship B 100 km south of A, is moving northwards with a speed of 10km/hr. Find the time after which the distance between them becomes shortest.

December 2, 2024

Description A ship A is moving westwards with a speed of 10km/hr and a ship B 100 km south of A, is moving northwards with a speed of 10km/hr. Find the time after which the distance between them becomes shortest. Frequently Asked Questions How to prepare for IIT-JEE Physics? To prepare for IIT-JEE Physics, focus

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