Physics set 1 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 448 questions
Q.331 If you are using a magnifying glass, the object must strictly be placed:
A beyond the center of curvature
B at the focal point
C between focal point and optical center
D at infinity
Discuss / Board
Q.332 A particle undergoing uniform circular motion possesses constant:
A velocity
B acceleration vector
C kinetic energy
D momentum vector
Discuss / Board
Q.333 What does the slope of a displacement-time graph directly represent?
A distance
B acceleration
C velocity
D jerk
Discuss / Board
Q.334 The energy possessed by an oscillating pendulum at its mean position is exclusively:
A potential energy
B kinetic energy
C mechanical energy
D zero
Discuss / Board
Q.335 Identify the vector quantity from the following options.
A electric current
B electric potential
C electric field intensity
D electrical resistance
Discuss / Board
Q.336 At absolute zero temperature (0 K), what theoretically happens to the kinetic energy of ideal gas molecules?
A it becomes maximum
B it becomes zero
C it becomes negative
D it remains unchanged
Discuss / Board
Q.337 A convex mirror of focal length f produces an image half the size of the object. The distance of the object from the mirror is:
A f
B 2f
C f/2
D 3f/2
Discuss / Board
Q.338 Why do stars twinkle but planets do not?
A planets emit their own continuous light
B stars are point sources, planets are extended sources
C planets are outside the atmosphere
D stars are hotter than planets
Discuss / Board
Q.339 In a p-n junction diode, the depletion layer thickness depends primarily on:
A temperature
B doping concentration
C applied voltage
D both doping concentration and applied voltage
Discuss / Board
Q.340 Which rule is strictly used to determine the direction of the magnetic field around a straight current-carrying conductor?
A flemings left hand rule
B flemings right hand rule
C maxwells right hand thumb rule
D lenzs rule
Discuss / Board
Q.341 During a thunderstorm, why is it safer to sit inside a closed car rather than standing under a tree?
A car rubber tires act as perfect insulators
B the tree attracts lightning easily
C the metal car acts as a faraday cage
D car height is much lower
Discuss / Board
Q.342 What happens to the focal length of a concave mirror if it is completely immersed in water?
A it increases
B it decreases
C it remains completely unchanged
D it becomes infinite
Discuss / Board
Q.343 An ideal heat engine operating between two temperatures T1 (source) and T2 (sink) has an efficiency expressed as:
A 1 - T1/T2
B 1 - T2/T1
C T1/T2 - 1
D T2/T1
Discuss / Board
Q.344 A person standing on a frictionless ice surface can move themselves to the edge strictly by:
A walking carefully
B sliding their feet
C throwing an object horizontally
D jumping straight up
Discuss / Board
Q.345 A piece of copper and a piece of germanium are cooled from room temperature to 80K. What happens to their resistances?
A both decrease
B copper decreases germanium increases
C copper increases germanium decreases
D both increase
Discuss / Board
Q.346 What is the phenomenon responsible for the formation of a rainbow after rain?
A dispersion reflection and refraction
B only dispersion
C interference and diffraction
D only total internal reflection
Discuss / Board
Q.347 If you throw a ball upwards with velocity v, the time taken for it to reach maximum height is:
A v/g
B 2v/g
C v^2/g
D v/2g
Discuss / Board
Q.348 Which of the following is true regarding a satellite orbiting very close to the earth's surface?
A its orbital velocity is zero
B its orbital velocity is maximum
C its time period is maximum
D its mass affects its velocity
Discuss / Board
Q.349 What is the equivalent capacitance of two capacitors C1 and C2 connected strictly in series?
A C1 + C2
B C1*C2 / (C1+C2)
C (C1+C2) / C1*C2
D 1/C1 + 1/C2
Discuss / Board
Q.350 According to the principle of conservation of mechanical energy, for a free-falling body, the total energy:
A increases continuously
B decreases continuously
C remains exactly constant
D first increases then decreases
Discuss / Board
Q.351 An open pipe and a closed pipe have the same fundamental frequency. What is the ratio of their lengths?
A 1:1
B 2:1
C 1:2
D 4:1
Discuss / Board
Q.352 To achieve maximum horizontal range, a projectile must be launched at an angle of:
A 30 degrees
B 45 degrees
C 60 degrees
D 90 degrees
Discuss / Board
Q.353 What is the primary cause of the spherical aberration defect in simple lenses?
A dispersion of white light
B different wavelengths focusing differently
C marginal rays focusing closer than paraxial rays
D surface scratches on the lens
Discuss / Board
Q.354 In Rutherford's gold foil experiment, why did a few alpha particles rebound directly backwards?
A electrons repelled them strongly
B gold atoms are exceptionally massive
C they hit a tiny massive positive nucleus
D gold foil was too thick
Discuss / Board
Q.355 A material with high retentivity and low coercivity is best suited for creating:
A permanent magnets
B electromagnets
C transformer cores
D compass needles
Discuss / Board
Q.356 According to the principle of superposition, the resultant amplitude of two interfering waves is maximum when phase difference is:
A pi
B pi/2
C zero or even multiple of pi
D odd multiple of pi
Discuss / Board
Q.357 A person stands on a sensitive scale in an elevator. In which of the following scenarios will the scale show the minimum reading?
A the elevator accelerates upwards at 2 m/s2
B the elevator accelerates downwards at 2 m/s2
C the elevator moves upwards with a constant velocity of 5 m/s
D the elevator moves downwards with a constant velocity of 5 m/s
Discuss / Board
Q.358 Which of the following statements is true regarding the total mechanical energy of a freely falling body in a vacuum?
A it increases continuously until it hits the ground
B it decreases as potential energy is lost
C it remains constant at all points during the fall
D it first increases and then decreases due to gravity
Discuss / Board
Q.359 If the radius of the Earth were to shrink by 1% while its mass remained the same, the acceleration due to gravity on the Earth surface would:
A decrease by 1%
B increase by 2%
C decrease by 2%
D increase by 1%
Discuss / Board
Q.360 A passenger in a moving train tosses a coin which falls behind him. This indicates that the motion of the train is:
A accelerated
B uniform
C retarded
D along a circular track
Discuss / Board

Master Physics set 1 for All Competitive Exams 2026

Practicing Physics set 1 MCQs is one of the most effective ways to prepare for competitive examinations in 2026. This topic-wise question bank contains carefully selected multiple-choice questions designed to strengthen conceptual understanding, improve accuracy, and enhance problem-solving speed. Our collection includes beginner, intermediate, and advanced-level questions frequently asked in JKSSB, SSC, Banking, Railway, Police, Defence, State PSC, and various national-level examinations. Every question is structured to reflect real exam patterns and helps candidates become familiar with objective-type assessment formats. Instant answer verification enables students to identify mistakes immediately and learn the correct approach without wasting valuable preparation time. Regular practice of topic-wise MCQs improves retention, reinforces key concepts, and develops confidence required to perform well under exam pressure. Whether you are revising important concepts, preparing for an upcoming recruitment test, or strengthening weak areas, these practice questions provide a reliable platform for continuous improvement. Consistent participation in MCQ-based learning sessions can significantly increase your chances of achieving higher scores and better ranks in competitive examinations.

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