Q. A beam of light passes through a narrow slit and produces a diffraction pattern. What happens to the width of the central maximum if the slit width is decreased? (2019)
A.
It increases
B.
It decreases
C.
It remains the same
D.
It becomes zero
Solution
According to the diffraction principle, as the slit width decreases, the width of the central maximum increases.
Q. A block of mass 2 kg is sliding down a frictionless incline of height 10 m. What is its speed at the bottom?
A.
10 m/s
B.
14 m/s
C.
20 m/s
D.
25 m/s
Solution
Using conservation of energy, potential energy at the top = kinetic energy at the bottom. mgh = 0.5mv². Thus, v = sqrt(2gh) = sqrt(2 * 9.8 * 10) = 14 m/s.
Q. A block of mass 2 kg is sliding down a frictionless incline of height 5 m. What is its speed at the bottom?
A.
5 m/s
B.
10 m/s
C.
15 m/s
D.
20 m/s
Solution
Using conservation of energy, potential energy at the top (mgh) converts to kinetic energy at the bottom (1/2 mv²). Thus, v = sqrt(2gh) = sqrt(2 * 9.8 * 5) ≈ 10 m/s.
Q. A block of mass 2 kg is sliding down a frictionless incline of height 5 m. What is its speed at the bottom of the incline?
A.
10 m/s
B.
5 m/s
C.
20 m/s
D.
15 m/s
Solution
Using conservation of energy, potential energy at the top = kinetic energy at the bottom. mgh = 0.5mv². Thus, v = sqrt(2gh) = sqrt(2 * 9.81 * 5) = 10 m/s.
Q. A block of mass 5 kg is pulled on a horizontal surface with a force of 20 N. If the frictional force is 5 N, what is the acceleration of the block? (2020)
A.
2 m/s²
B.
3 m/s²
C.
4 m/s²
D.
5 m/s²
Solution
Net force = Applied force - Frictional force = 20 N - 5 N = 15 N. Using F = ma, a = F/m = 15 N / 5 kg = 3 m/s².
Q. A block of mass 5 kg is resting on a horizontal surface. If a horizontal force of 15 N is applied, what is the acceleration of the block? (Assume no friction) (2021)
A.
1 m/s²
B.
2 m/s²
C.
3 m/s²
D.
4 m/s²
Solution
Using F = ma, acceleration a = F/m = 15 N / 5 kg = 3 m/s².
Q. A charge of +4 µC is placed in a uniform electric field of strength 500 N/C. What is the work done in moving the charge 0.2 m in the direction of the field?
A.
400 J
B.
200 J
C.
100 J
D.
50 J
Solution
W = F * d = (E * q) * d = (500 N/C * 4 × 10^-6 C) * 0.2 m = 0.4 J.
Q. A charged particle moves in a magnetic field. What is the path of the particle if it enters the field perpendicularly? (2023)
A.
Straight line
B.
Circular path
C.
Elliptical path
D.
Parabolic path
Solution
A charged particle moving perpendicularly to a magnetic field experiences a magnetic force that acts as a centripetal force, causing it to move in a circular path.
Physics is a crucial subject for students preparing for the MHT-CET exam, as it forms the foundation for many scientific concepts. Mastering Physics through MCQs and objective questions not only enhances your understanding but also significantly boosts your exam scores. Regular practice with these questions helps you identify important topics and improves your problem-solving skills, making it an essential part of your exam preparation.
What You Will Practise Here
Mechanics: Laws of Motion, Work, Energy, and Power
Thermodynamics: Laws, Heat Transfer, and Applications
Waves and Oscillations: Types of Waves, Sound Waves, and Properties
Optics: Reflection, Refraction, and Optical Instruments
Electromagnetism: Electric Fields, Magnetic Fields, and Circuits
Modern Physics: Quantum Theory, Atomic Structure, and Nuclear Physics
Key Formulas and Definitions: Essential for quick revisions
Exam Relevance
Physics is a significant component of various examinations including CBSE, State Boards, NEET, and JEE. In these exams, questions often focus on conceptual understanding and application of theories. Common patterns include numerical problems, conceptual MCQs, and application-based questions that test your grasp of fundamental principles. Familiarity with these patterns through practice will enhance your confidence and performance on exam day.
Common Mistakes Students Make
Misunderstanding the application of formulas in different contexts.
Overlooking units and dimensions, leading to incorrect answers.
Confusing similar concepts, such as velocity and acceleration.
Neglecting to read questions carefully, resulting in misinterpretation.
Rushing through calculations without checking for errors.
FAQs
Question: What are the best ways to prepare for Physics (MHT-CET) MCQs? Answer: Regular practice with previous years' question papers and mock tests, along with a focus on understanding concepts, is key to success.
Question: How can I improve my speed in solving Physics MCQs? Answer: Time yourself while practicing and focus on solving simpler questions first to build confidence and speed.
Start your journey towards mastering Physics today! Solve practice MCQs and test your understanding to ensure you are well-prepared for the MHT-CET exam. Your success in Physics is just a question away!
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