Q. In the passage, the term 'sustainable practices' most closely refers to which of the following?
A.
Methods that are economically beneficial.
B.
Practices that do not deplete resources.
C.
Techniques that are easy to implement.
D.
Strategies that are popular among consumers.
Solution
The passage defines sustainable practices as those that maintain resource availability for future generations, aligning with environmental conservation.
Correct Answer:
B
— Practices that do not deplete resources.
Q. In the passage, the word 'esoteric' is used to describe knowledge that is:
A.
widely known
B.
difficult to understand
C.
easily accessible
D.
commonplace
Solution
'Esoteric' refers to knowledge that is intended for or likely to be understood by only a small number of people, thus 'difficult to understand' is correct.
Q. In the photoelectric effect, if the frequency of incident light is doubled, what happens to the kinetic energy of the emitted electrons?
A.
It doubles
B.
It quadruples
C.
It remains the same
D.
It becomes zero
Solution
The kinetic energy of the emitted electrons is given by KE = hf - φ. If the frequency is doubled, the kinetic energy increases by a factor of four, since KE is proportional to the frequency.
Q. In the photoelectric effect, the kinetic energy of the emitted electrons depends on which of the following?
A.
Frequency of the incident light
B.
Intensity of the incident light
C.
Wavelength of the incident light
D.
All of the above
Solution
The kinetic energy of the emitted electrons in the photoelectric effect depends on the frequency of the incident light, as per Einstein's photoelectric equation.
Correct Answer:
A
— Frequency of the incident light
Q. In the photoelectric effect, what happens to the emitted electrons if the frequency of the incident light is just at the threshold frequency?
A.
They are emitted with maximum kinetic energy
B.
They are emitted with zero kinetic energy
C.
They are not emitted
D.
They are emitted with negative kinetic energy
Solution
At the threshold frequency, the energy of the incident photons is equal to the work function, resulting in emitted electrons having zero kinetic energy.
Correct Answer:
B
— They are emitted with zero kinetic energy
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons if the intensity of light is increased while keeping frequency constant?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Solution
The kinetic energy of emitted electrons remains the same as it depends on the frequency, not intensity.
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons as the frequency of incident light increases? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Solution
According to the photoelectric effect, the kinetic energy of emitted electrons increases with the frequency of the incident light, provided the frequency is above the threshold frequency.
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons when the frequency of incident light is increased? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Solution
According to the photoelectric effect, the kinetic energy of emitted electrons increases with the frequency of the incident light, provided the frequency is above the threshold frequency.
Q. In the photoelectric effect, what happens to the kinetic energy of the emitted electrons if the frequency of the incident light is increased?
A.
It decreases
B.
It remains constant
C.
It increases
D.
It becomes negative
Solution
The kinetic energy of the emitted electrons increases with the frequency of the incident light, as given by the equation KE = hf - φ, where φ is the work function.
Q. In the photoelectric effect, what is the effect of increasing the wavelength of incident light?
A.
Increases the kinetic energy of emitted electrons
B.
Decreases the kinetic energy of emitted electrons
C.
Has no effect on the photoelectric effect
D.
Increases the number of emitted electrons
Solution
Increasing the wavelength decreases the frequency of the light, which reduces the energy of the incident photons, thus decreasing the kinetic energy of emitted electrons.
Correct Answer:
B
— Decreases the kinetic energy of emitted electrons
Q. In the photoelectric effect, which of the following factors does NOT affect the photoelectric current?
A.
Intensity of light
B.
Frequency of light
C.
Surface area of the metal
D.
Type of metal
Solution
The frequency of light must be above a certain threshold to emit electrons, but once that is achieved, the photoelectric current depends on the intensity, not the frequency.
Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.
What You Will Practise Here
Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams
Exam Relevance
The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.
Common Mistakes Students Make
Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam
FAQs
Question: How can I improve my performance in Major Competitive Exams? Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Question: What types of questions should I focus on for these exams? Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.
Question: Are there specific strategies for tackling objective questions? Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.
Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!
Soulshift Feedback×
On a scale of 0–10, how likely are you to recommend
The Soulshift Academy?
