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NTA13 Questions
Physics MCQs
Practice Physics multiple-choice questions for NTA competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.
It is zero
It is directed towards the center
It is directed along the tangent
It is constant in both magnitude and direction
ExplanationIn uniform circular motion, the velocity changes direction continuously, resulting in centripetal acceleration directed toward the center.
[ML^2T^-1]
[MLT^-1]
[ML^2T^-2]
[ML^-1T^-1]
ExplanationSince E = hf, h = E/f. Energy (E) has dimensions [ML^2T^-2] and frequency (f) has [T^-1], resulting in [ML^2T^-1].
It remains zero.
It is directed toward the center of the circle.
It is directed outward from the center.
It is constant in both magnitude and direction.
ExplanationIn uniform circular motion, the speed is constant, but the direction changes, resulting in centripetal acceleration pointing toward the center.
[ML^2T^-1]
[MLT^-2]
[ML^2T^-2]
[M^-1L^2T]
ExplanationSince Energy (E) = h * frequency (f), h = E / f. Units are (kg·m²/s²) / (1/s) = kg·m²/s.
10 m
20 m
30 m
40 m
ExplanationUsing v² = u² + 2as, where v=0, u=20, a=-10. 0 = 400 - 20s, so s = 20m.
Force is independent of momentum.
Force is directly proportional to the rate of change of momentum.
Force is inversely proportional to momentum.
Force is the product of mass and momentum.
ExplanationNewton's second law states that the net force applied is equal to the rate of change of linear momentum (F = dp/dt).
1 ohm
2 ohms
6 ohms
8 ohms
ExplanationIn a series circuit, resistors are added directly: R_total = R1 + R2 = 2 + 4 = 6 ohms.
Positive
Negative
Zero
Infinite
ExplanationAcceleration is the rate of change of velocity. If velocity is constant, the rate of change is zero.
Energy
Power
Angular momentum
Force
ExplanationAngular momentum (L) has units of (kg·m²/s), which simplifies to Joule-second.
It remains the same
It increases by a factor of square root of 2
It doubles
It becomes half
ExplanationEscape velocity is given by v = sqrt(2GM/R). If M is doubled, v becomes sqrt(2) times the original.
Temperature
Pressure
Heat content
Volume
ExplanationBy definition, an adiabatic process is one where no heat is exchanged with the surroundings (dQ=0).
Weber
Henry
Tesla
Farad
ExplanationThe Henry (H) is the SI unit of electrical inductance.
Red
Yellow
Green
Violet
ExplanationViolet light has the shortest wavelength and thus the highest refractive index in glass, causing maximum deviation.
Frequently Asked Questions
Are these Physics MCQs free?
Yes. Every Physics MCQ on this page is free to practice, including the correct answer and explanation.
Do these include past-paper questions?
Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.
Which exams do these Physics MCQs help with?
They are aimed at NTA and related Pakistani competitive exams that test Physics.
How should I practice subject-wise MCQs?
Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.