Q. In an RLC circuit, if the inductive reactance is 10Ω and capacitive reactance is 5Ω, what is the net reactance? (2020)
A.
5Ω
B.
10Ω
C.
15Ω
D.
0Ω
Show solution
Solution
Net reactance = XL - XC = 10Ω - 5Ω = 5Ω.
Correct Answer:
A
— 5Ω
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Q. In an RLC circuit, if the inductive reactance is 30Ω and capacitive reactance is 20Ω, what is the net reactance? (2020)
A.
10Ω
B.
50Ω
C.
30Ω
D.
20Ω
Show solution
Solution
Net reactance X = XL - XC = 30Ω - 20Ω = 10Ω.
Correct Answer:
A
— 10Ω
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Q. In an RLC circuit, if the resistance is 10Ω, the inductance is 0.1H, and the capacitance is 20μF, what is the total impedance at 50Hz? (2022)
A.
10Ω
B.
15.81Ω
C.
20Ω
D.
25Ω
Show solution
Solution
Calculate XL = 2πfL = 31.42Ω and XC = 1/(2πfC) = 159.15Ω. Z = √(R² + (XL - XC)²) = √(10² + (31.42 - 159.15)²) = 15.81Ω.
Correct Answer:
B
— 15.81Ω
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Q. In an RLC circuit, if the resistance is 6Ω, inductive reactance is 8Ω, and capacitive reactance is 4Ω, what is the total impedance? (2021)
A.
10Ω
B.
12Ω
C.
14Ω
D.
16Ω
Show solution
Solution
Total impedance Z = √(R² + (XL - XC)²) = √(6² + (8 - 4)²) = √(36 + 16) = √52 ≈ 10Ω.
Correct Answer:
B
— 12Ω
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Q. In an RLC circuit, if the resistance is increased, what happens to the quality factor (Q)? (2021)
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
The quality factor Q is inversely proportional to resistance. Increasing resistance decreases Q.
Correct Answer:
B
— Decreases
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Q. In an RLC series circuit, if the inductive reactance is greater than the capacitive reactance, the circuit is said to be: (2022)
A.
Resonant
B.
Inductive
C.
Capacitive
D.
Purely resistive
Show solution
Solution
If the inductive reactance (XL) is greater than the capacitive reactance (XC), the circuit is inductive.
Correct Answer:
B
— Inductive
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Q. In an RLC series circuit, if the resistance is 10 Ω, inductance is 0.1 H, and capacitance is 100 μF, what is the resonant frequency? (2023)
A.
50 Hz
B.
100 Hz
C.
159 Hz
D.
200 Hz
Show solution
Solution
The resonant frequency f0 = 1/(2π√(LC)) = 1/(2π√(0.1 * 100e-6)) = 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the resistance is 10 Ω, the inductance is 0.1 H, and the capacitance is 100 μF, what is the resonant frequency? (2023)
A.
50 Hz
B.
100 Hz
C.
159 Hz
D.
200 Hz
Show solution
Solution
The resonant frequency f0 = 1/(2π√(LC)) = 1/(2π√(0.1 * 100e-6)) = 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the resistance is 10Ω, the inductance is 0.1H, and the capacitance is 100μF, what is the resonant frequency? (2020)
A.
50 Hz
B.
100 Hz
C.
159 Hz
D.
200 Hz
Show solution
Solution
Using f = 1/(2π√(LC)), we find f = 1/(2π√(0.1 * 100e-6)) ≈ 159 Hz.
Correct Answer:
C
— 159 Hz
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Q. In an RLC series circuit, if the total impedance is 20Ω and the resistance is 15Ω, what is the reactance? (2022)
A.
5Ω
B.
10Ω
C.
15Ω
D.
20Ω
Show solution
Solution
Using Z = √(R² + X²), we find X = √(Z² - R²). Here, Z = 20Ω, R = 15Ω.
Correct Answer:
A
— 5Ω
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Q. In an RLC series circuit, if the total impedance is 20Ω and the resistance is 15Ω, what is the inductive reactance? (2022)
A.
5Ω
B.
10Ω
C.
15Ω
D.
20Ω
Show solution
Solution
Using Z = √(R² + (XL)²), solve for XL.
Correct Answer:
A
— 5Ω
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Q. In an RLC series circuit, if the total impedance is 50 ohms and the resistance is 30 ohms, what is the reactance? (2020)
A.
40 ohms
B.
30 ohms
C.
20 ohms
D.
10 ohms
Show solution
Solution
Using Z = √(R² + X²), we find X = √(Z² - R²) = √(50² - 30²) = √(2500 - 900) = √1600 = 40 ohms.
Correct Answer:
A
— 40 ohms
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Q. In the photoelectric effect, if the frequency of incident light is doubled, what happens to the kinetic energy of emitted electrons? (2020)
A.
It doubles
B.
It quadruples
C.
It remains the same
D.
It becomes zero
Show solution
Solution
Kinetic energy (KE) = hf - φ. If frequency is doubled, KE increases by a factor of 4.
Correct Answer:
B
— It quadruples
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Q. In thin film interference, which of the following will cause a shift in the interference pattern? (2022)
A.
Change in wavelength
B.
Change in film thickness
C.
Change in angle of incidence
D.
All of the above
Show solution
Solution
All these factors can affect the path difference and thus shift the interference pattern in thin film interference.
Correct Answer:
D
— All of the above
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Q. In which direction does the magnetic field line emerge from a bar magnet? (2022)
A.
From North to South
B.
From South to North
C.
In a circular path
D.
Randomly
Show solution
Solution
Magnetic field lines emerge from the north pole and enter the south pole of a bar magnet.
Correct Answer:
A
— From North to South
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Q. The dimensional formula for energy is: (2020)
A.
[M^1 L^2 T^-2]
B.
[M^2 L^1 T^-2]
C.
[M^0 L^2 T^0]
D.
[M^1 L^0 T^-1]
Show solution
Solution
Energy is defined as work done, which has the dimensional formula [M^1 L^2 T^-2].
Correct Answer:
A
— [M^1 L^2 T^-2]
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Q. The dimensional formula for frequency is: (2023)
A.
[T^-1]
B.
[M^0 L^0 T^-1]
C.
[M^1 L^1 T^-1]
D.
[M^0 L^1 T^0]
Show solution
Solution
Frequency is defined as the number of cycles per unit time, hence its dimensional formula is [T^-1].
Correct Answer:
A
— [T^-1]
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Q. The dimensional formula for velocity is: (2022)
A.
[M^0 L^1 T^-1]
B.
[M^1 L^1 T^0]
C.
[M^1 L^0 T^-1]
D.
[M^0 L^0 T^1]
Show solution
Solution
Velocity is defined as displacement per unit time, hence its dimensional formula is [M^0 L^1 T^-1].
Correct Answer:
A
— [M^0 L^1 T^-1]
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Q. The direction of induced current can be determined by which law? (2023)
A.
Lenz's Law
B.
Faraday's Law
C.
Ohm's Law
D.
Ampere's Law
Show solution
Solution
Lenz's Law states that the direction of induced current is such that it opposes the change in magnetic flux that produced it.
Correct Answer:
A
— Lenz's Law
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Q. The force on a charged particle in a magnetic field is maximum when the angle between the velocity and the magnetic field is: (2021)
A.
0 degrees
B.
90 degrees
C.
180 degrees
D.
45 degrees
Show solution
Solution
The force on a charged particle in a magnetic field is maximum when the angle between the velocity and the magnetic field is 90 degrees.
Correct Answer:
B
— 90 degrees
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Q. The force on a charged particle moving in a magnetic field is maximum when the angle between the velocity and the magnetic field is: (2021)
A.
0 degrees
B.
90 degrees
C.
180 degrees
D.
45 degrees
Show solution
Solution
The force on a charged particle moving in a magnetic field is maximum when the angle between the velocity and the magnetic field is 90 degrees.
Correct Answer:
B
— 90 degrees
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Q. The force on a charged particle moving in a magnetic field is maximum when: (2021)
A.
The particle moves parallel to the field
B.
The particle moves perpendicular to the field
C.
The particle is at rest
D.
The particle moves in a circular path
Show solution
Solution
The force on a charged particle moving in a magnetic field is maximum when the particle moves perpendicular to the field.
Correct Answer:
B
— The particle moves perpendicular to the field
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Q. The frequency of a tuning fork is 440 Hz. What is the time period of the fork? (2019)
A.
0.00227 s
B.
0.0045 s
C.
0.01 s
D.
0.005 s
Show solution
Solution
Time period (T) = 1 / frequency (f) = 1 / 440 Hz ≈ 0.00227 s.
Correct Answer:
A
— 0.00227 s
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Q. The frequency of a tuning fork is 440 Hz. What is the time period of the sound wave produced? (2022)
A.
0.00227 s
B.
0.0045 s
C.
0.01 s
D.
0.005 s
Show solution
Solution
Time period (T) = 1 / frequency (f) = 1 / 440 Hz ≈ 0.00227 s.
Correct Answer:
A
— 0.00227 s
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Q. The frequency of a wave is doubled. How does this affect its wavelength if the speed of the wave remains constant? (2022)
A.
Wavelength doubles
B.
Wavelength halves
C.
Wavelength remains the same
D.
Wavelength quadruples
Show solution
Solution
According to the wave equation v = fλ, if frequency (f) is doubled and speed (v) remains constant, wavelength (λ) must halve.
Correct Answer:
B
— Wavelength halves
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Q. The maximum displacement of a wave from its rest position is called what? (2022)
A.
Amplitude
B.
Wavelength
C.
Frequency
D.
Period
Show solution
Solution
The maximum displacement from the rest position is defined as the amplitude of the wave.
Correct Answer:
A
— Amplitude
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Q. The resonant frequency of an RLC circuit is given by which formula? (2022)
A.
f = 1/(2π√(LC))
B.
f = 2π√(LC)
C.
f = LC
D.
f = R/(2πL)
Show solution
Solution
The resonant frequency f of an RLC circuit is given by f = 1/(2π√(LC)).
Correct Answer:
A
— f = 1/(2π√(LC))
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Q. The unit of electric charge in the SI system is: (2022)
A.
Coulomb
B.
Ampere
C.
Volt
D.
Ohm
Show solution
Solution
Coulomb (C) is the SI unit of electric charge.
Correct Answer:
A
— Coulomb
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Q. The unit of energy equivalent to 1 Joule is: (2023)
A.
1 kg·m²/s²
B.
1 N·m
C.
Both 1 kg·m²/s² and 1 N·m
D.
None of the above
Show solution
Solution
1 Joule is defined as 1 kg·m²/s² and also equals 1 N·m, hence both are correct.
Correct Answer:
C
— Both 1 kg·m²/s² and 1 N·m
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Q. The unit of energy in the CGS system is: (2020)
A.
Joule
B.
Erg
C.
Calorie
D.
Watt
Show solution
Solution
In the CGS system, the unit of energy is Erg, where 1 Joule = 10^7 Ergs.
Correct Answer:
B
— Erg
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Showing 571 to 600 of 846 (29 Pages)
Physics (MHT-CET) MCQ & Objective Questions
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!
