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Welcome to the BYJU’S JEE questions and answers page! Students and aspirants can access a huge library of questions covering all the important topics that are included in the JEE syllabus. The questions and answers have been prepared by a group of experienced subject matter experts. Students will find questions framed from Physics, Maths and Chemistry subjects.

The JEE questions and answers discussed here will give a much clearer idea of many JEE topics such as gravitation, thermodynamics, atomic structure, chemical bonding, binomial theorem, quadratic equation, etc. The questions have further been answered in an informative and easy to understand manner.

Alternatively, the questions are very important from an examination point of view and can help in quick revision of the different topics. Additionally, students can also clear their doubts and confusion by referring to these questions regarding any concept or topic. Students will find questions that are both conceptual and descriptive including definitions, principles, formulas, examples of, properties of, and types.

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Answer: Given (√3/2 +i/2)n = 1 => (cos θ+i sin θ)n = 1 => cos θ = √3/2 sin θ = ½ => θ = 300 = π/6 (cosπ/6 +i sin π/6)n = 1 =>...
Answer: Use 1+ω = -ω2 and 1+ω2 = -ω (1 - ω + ω2) = -2ω (1 - ω2 + ω4) = (1 - ω2 + ω3 ω) = (1 - ω2 + ω) = -2ω2...
Answer: The wavelength is defined as the distance between two successive crests or troughs of a wave. A wavelength is measured in the direction of the wave. As the wavelength is distance/length, it is...
Answer: Given1, a1, a2,...an-1 are the nth roots of unity. So xn-1= (x-1)(x-a1)...(x-an-1) ( xn-1)/(x-1) = (x-a1)(x-a2)...(x-an-1) xn-1+xn-2+...x2+x+1 = (x-a1)(x-a2)...(x-an-1) Substitute x = 1 =...
Answer: We use alternating current in the transportation industry. Most of our household appliances are powered by AC. AC is a popular choice for powering electric motors. AC is a preferred choice for...
Answer: Given iz4 + 1 = 0 iz4 = -1 z4 = -1/i = i2/i = i = 0+i z= i1/4 z = (cos π/2 + i sin π/2)¼ = cos π/8 + i sin π/8 Hence option (2) is the answer...
Answer: The ideal gas law relates the four physical properties of a gas at any given time. The law is used in stoichiometry problems involving chemical reactions consisting gases. The ideal gas equation...
Answer: We know ω = (-½)+(√3/2) i 4+5(-½ +i√3/2)334+3(-½ +i√3/2)365 = 4+5ω334+3ω365 = 4+5(ω3)111+3(ω3)121ω2 =...
Answer: A transverse wave is a wave in motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's direction. Light is a transverse wave because its...
Answer: Let ω = (-1-√3i)/2 and ω2 = (-1+√3i)/2 ((-1+√-3)/2)100 +(-1-√-3)/2)100 = ((-1+√3i)/2)100 +(-1-√3i)/2)100 = (ω2)100+ω100 =...
Answer: Galvanometer is a device used to detect and measure the magnitude of small current. It is mainly used in potentiometers and bridges, where they indicate small deflection. It is a very sensitive...
Answer: Gravitational force or gravity is one of the basic forces of nature. The gravitational force is an attractive force between any two objects in the universe. The formula for gravity is derived...
Answer: Which lens is called a diverging lens?Concave lens is called a diverging lens. The working of the lens is dependent on the refraction of the light rays as they pass through the lens. A light ray...
Answer: What is the meaning of wavelength? Wavelength is the distance between two successive troughs or two successive crests. The crest is the highest point on the wave and trough is the lowest. The...
Answer: The junction between the p-type semiconductor and the n-type semiconductor is called the PN-junction. The majority charge carriers in a p-type semiconductor are holes. In the n-type...
Answer: What is the meaning of thermodynamics?. Thermodynamicsis the branch of physics which deals with the energy relationships involving heat, mechanical energy and other forms of energy. The...
Answer: What is the function of a voltmeter? A voltmeter is an instrument used for measuring the voltage or potential difference between two points in an electrical circuit. The voltmeter is always...
Answer: Momentum is a vector quantity. The momentum of a body is defined as the product of mass and velocity of that body. Mathematically, this is represented as where m is the mass of the body, v is...
Answer: What is the closest planet to the Sun?. The closest planet to the Sun is Mercury. Mercury circles the Sun in 88 days, this is the shortest time taken by any planet to go around the Sun. Mercury...
Answer: The wavefront of a time-varying field is the set (locus) of all points where the wave has the same phase of the sinusoid. The wavefront of waves propagating in a unidimensional medium is usually...
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