JEE Main MCQ & Objective Questions

The JEE Main exam is a crucial step for students aspiring to enter prestigious engineering colleges in India. It tests not only knowledge but also the ability to apply concepts effectively. Practicing MCQs and objective questions is essential for scoring better, as it helps in familiarizing students with the exam pattern and enhances their problem-solving skills. Engaging with practice questions allows students to identify important questions and strengthen their exam preparation.

What You Will Practise Here

  • Fundamental concepts of Physics, Chemistry, and Mathematics
  • Key formulas and their applications in problem-solving
  • Important definitions and theories relevant to JEE Main
  • Diagrams and graphical representations for better understanding
  • Numerical problems and their step-by-step solutions
  • Previous years' JEE Main questions for real exam experience
  • Time management strategies while solving MCQs

Exam Relevance

The topics covered in JEE Main are not only significant for the JEE exam but also appear in various CBSE and State Board examinations. Many concepts are shared with the NEET syllabus, making them relevant across multiple competitive exams. Common question patterns include conceptual applications, numerical problems, and theoretical questions that assess a student's understanding of core subjects.

Common Mistakes Students Make

  • Misinterpreting the question stem, leading to incorrect answers
  • Neglecting units in numerical problems, which can change the outcome
  • Overlooking negative marking and not managing time effectively
  • Relying too heavily on rote memorization instead of understanding concepts
  • Failing to review and analyze mistakes from practice tests

FAQs

Question: How can I improve my speed in solving JEE Main MCQ questions?
Answer: Regular practice with timed quizzes and focusing on shortcuts can significantly enhance your speed.

Question: Are the JEE Main objective questions similar to previous years' papers?
Answer: Yes, many questions are based on previous years' patterns, so practicing them can be beneficial.

Question: What is the best way to approach JEE Main practice questions?
Answer: Start with understanding the concepts, then attempt practice questions, and finally review your answers to learn from mistakes.

Now is the time to take charge of your preparation! Dive into solving JEE Main MCQs and practice questions to test your understanding and boost your confidence for the exam.

Q. What is the effect of increasing the tension in a string on the speed of a wave traveling along it?
  • A. Speed decreases
  • B. Speed increases
  • C. Speed remains constant
  • D. Speed becomes zero
Q. What is the effect of increasing the tension in a string on the speed of a wave traveling through it?
  • A. Increases speed
  • B. Decreases speed
  • C. No effect
  • D. Depends on the mass
Q. What is the effect of increasing the transmission power in a communication system?
  • A. Increased range
  • B. Decreased noise
  • C. Higher bandwidth
  • D. Lower distortion
Q. What is the effect of increasing the wavelength of incident light on the photoelectric effect?
  • A. More electrons are emitted
  • B. Fewer electrons are emitted
  • C. The kinetic energy of emitted electrons increases
  • D. The work function decreases
Q. What is the effect of increasing the wavelength of incident light on the photoelectric current?
  • A. It increases the current
  • B. It decreases the current
  • C. It has no effect
  • D. It stops the current
Q. What is the effect of increasing the wavelength of light in a diffraction grating experiment?
  • A. Fringe spacing decreases
  • B. Fringe spacing increases
  • C. No effect on fringe spacing
  • D. Fringe intensity increases
Q. What is the effect of increasing the wavelength of light in a diffraction pattern?
  • A. Fringe spacing decreases
  • B. Fringe spacing increases
  • C. No effect on fringe spacing
  • D. Fringe intensity increases
Q. What is the effect of increasing the wavelength of light in a double-slit diffraction experiment?
  • A. Fringe separation decreases
  • B. Fringe separation increases
  • C. No effect on fringe separation
  • D. Fringe visibility decreases
Q. What is the effect of increasing the wavelength of light in a double-slit experiment on the fringe separation?
  • A. Fringe separation decreases
  • B. Fringe separation increases
  • C. Fringe separation remains the same
  • D. Fringe separation becomes zero
Q. What is the effect of increasing the wavelength of light in a double-slit experiment?
  • A. Fringe width decreases
  • B. Fringe width increases
  • C. Fringe separation remains unchanged
  • D. No effect on interference pattern
Q. What is the effect of increasing the wavelength of light on the diffraction pattern produced by a single slit?
  • A. The pattern becomes sharper
  • B. The pattern becomes broader
  • C. The pattern remains unchanged
  • D. The pattern disappears
Q. What is the effect of increasing the wavelength of light on the fringe separation in a double-slit experiment?
  • A. Increases
  • B. Decreases
  • C. No effect
  • D. Depends on slit separation
Q. What is the effect of increasing the wavelength of light used in a double-slit experiment on the fringe separation?
  • A. Fringe separation decreases
  • B. Fringe separation increases
  • C. Fringe separation remains the same
  • D. Fringe separation becomes zero
Q. What is the effect of increasing the wavelength on the diffraction pattern of a single slit?
  • A. Fringes become narrower
  • B. Fringes become wider
  • C. Fringes disappear
  • D. Fringes become brighter
Q. What is the effect of increasing the wavelength on the diffraction pattern?
  • A. Fringes become narrower
  • B. Fringes become wider
  • C. No effect
  • D. Fringes disappear
Q. What is the effect of increasing the work function of a metal on the photoelectric effect?
  • A. More electrons are emitted
  • B. Fewer electrons are emitted
  • C. The frequency of light must be increased
  • D. Both B and C are correct
Q. What is the effect of inserting a dielectric material between the plates of a capacitor?
  • A. Increases capacitance
  • B. Decreases capacitance
  • C. No effect on capacitance
  • D. Changes the voltage across the plates
Q. What is the effect of pressure on the viscosity of gases?
  • A. Increases viscosity
  • B. Decreases viscosity
  • C. No effect
  • D. Depends on temperature
Q. What is the effect of pressure on the viscosity of liquids?
  • A. Increases viscosity
  • B. Decreases viscosity
  • C. No effect
  • D. Depends on the temperature
Q. What is the effect of rotating a polarizer in front of a beam of polarized light?
  • A. The intensity increases
  • B. The intensity decreases
  • C. The intensity remains constant
  • D. The light changes color
Q. What is the effect of rotating a polarizer in front of a polarized light source?
  • A. Intensity remains constant
  • B. Intensity increases
  • C. Intensity decreases
  • D. Intensity first increases then decreases
Q. What is the effect of substituents on the reactivity of aromatic compounds in electrophilic substitution?
  • A. All substituents deactivate the ring.
  • B. Electron-donating groups activate the ring.
  • C. Electron-withdrawing groups have no effect.
  • D. All substituents direct to the meta position.
Q. What is the effect of substituents on the reactivity of aromatic compounds?
  • A. All substituents are deactivating
  • B. Some are activating and some are deactivating
  • C. All are activating
  • D. None affect reactivity
Q. What is the effect of surfactants on the surface tension of water?
  • A. Increase surface tension
  • B. Decrease surface tension
  • C. No effect
  • D. Double the surface tension
Q. What is the effect of temperature on Raoult's Law?
  • A. It has no effect.
  • B. It increases vapor pressure.
  • C. It decreases vapor pressure.
  • D. It only affects the solute.
Q. What is the effect of temperature on the capacitance of a capacitor?
  • A. Increases capacitance
  • B. Decreases capacitance
  • C. No effect
  • D. Depends on the dielectric
Q. What is the effect of temperature on the entropy of a substance?
  • A. Entropy decreases with increasing temperature.
  • B. Entropy increases with increasing temperature.
  • C. Entropy remains constant with temperature.
  • D. Temperature has no effect on entropy.
Q. What is the effect of temperature on the equilibrium constant for an exothermic reaction?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. Remains constant
  • D. Depends on the concentration
Q. What is the effect of temperature on the equilibrium constant K for an exothermic reaction?
  • A. K increases with temperature
  • B. K decreases with temperature
  • C. K remains constant
  • D. K is independent of temperature
Q. What is the effect of temperature on the magnetic susceptibility of a paramagnetic material?
  • A. Increases with temperature
  • B. Decreases with temperature
  • C. Remains constant
  • D. Becomes zero
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