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 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
Solution
Increasing the wavelength decreases the frequency of the incident light, which can lead to fewer or no electrons being emitted if the frequency falls below the threshold frequency.
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
Solution
Increasing the work function means that a higher frequency of light is required to emit electrons, resulting in fewer electrons being emitted for a given frequency of light.
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
Solution
As the polarizer is rotated, the intensity of the transmitted light varies according to the cosine square of the angle between the light's polarization direction and the polarizer's axis.
Correct Answer:
D
— Intensity first increases then decreases
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
Solution
Substituents can either activate or deactivate the aromatic ring towards electrophilic substitution, depending on their electron-donating or electron-withdrawing nature.
Correct Answer:
B
— Some are activating and some are deactivating