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.391 A fuse is always connected in which part of the electrical circuit?
A neutral wire
B live wire
C earth wire
D anywhere in the circuit
Discuss / Board
Q.392 When a ship enters the sea from a river, it:
A sinks a little
B remains at the same level
C rises a little
D depends on the weight of the ship
Discuss / Board
Q.393 The device used to measure the depth of the ocean is:
A fluxmeter
B fathometer
C endoscope
D hydrometer
Discuss / Board
Q.394 In a p-n junction diode, the depletion layer is formed by:
A diffusion of charge carriers
B drift of charge carriers
C application of forward bias
D application of reverse bias
Discuss / Board
Q.395 Newton's First Law of motion defines which physical concept?
A force
B inertia
C momentum
D acceleration
Discuss / Board
Q.396 For a normal human eye, the least distance of distinct vision is:
A 25 m
B 2.5 cm
C 25 cm
D infinite
Discuss / Board
Q.397 Which of the following is the most elastic substance?
A rubber
B steel
C glass
D plastic
Discuss / Board
Q.398 The weight of an object at the center of the Earth is:
A infinite
B same as on the surface
C zero
D half of that on the surface
Discuss / Board
Q.399 Which radioactive isotope is used to determine the age of fossils?
A uranium-238
B cobalt-60
C carbon-14
D iodine-131
Discuss / Board
Q.400 When milk is churned, the cream separates from it due to:
A centripetal force
B centrifugal force
C frictional force
D gravitational force
Discuss / Board
Q.401 A body starts from rest and moves with a uniform acceleration. The ratio of the distance covered in the 1st second to the 2nd second is:
A 1:2
B 1:3
C 1:4
D 2:3
Discuss / Board
Q.402 The resistance of an ideal ammeter should be:
A very high
B very low
C zero
D infinite
Discuss / Board
Q.403 In the process of nuclear fission, energy is released because:
A total mass of products is less than parent nucleus
B total mass of products is more than parent nucleus
C neutrons are destroyed
D protons are converted to neutrons
Discuss / Board
Q.404 Which of the following electromagnetic waves has the highest frequency?
A ultraviolet rays
B gamma rays
C radio waves
D microwaves
Discuss / Board
Q.405 The property of a material by which it can be drawn into thin wires is called:
A malleability
B ductility
C brittleness
D elasticity
Discuss / Board
Q.406 A magnifying glass comprises a simple:
A convex lens
B concave lens
C convex mirror
D concave mirror
Discuss / Board
Q.407 Surface tension in a liquid is due to:
A adhesive force between molecules
B cohesive force between molecules
C gravitational force
D atmospheric pressure
Discuss / Board
Q.408 The work done in moving a unit positive charge from one point to another in an electric circuit is called:
A electric current
B potential difference
C resistance
D capacitance
Discuss / Board
Q.409 An example of a longitudinal wave is:
A light wave
B radio wave
C sound wave
D gamma rays
Discuss / Board
Q.410 The intensity of an earthquake is measured using a:
A barometer
B hydrometer
C seismograph
D polygraph
Discuss / Board
Q.411 When an object is placed at infinity in front of a concave mirror, the image is formed at the:
A center of curvature
B focus
C pole
D behind the mirror
Discuss / Board
Q.412 Which of the following transitions in a hydrogen atom emits the photon of highest frequency?
A n=2 to n=1
B n=3 to n=2
C n=4 to n=3
D n=5 to n=4
Discuss / Board
Q.413 The resistance of a conductor is inversely proportional to its:
A length
B resistivity
C area of cross-section
D temperature
Discuss / Board
Q.414 Which among the following is a semiconductor?
A copper
B silicon
C aluminum
D silver
Discuss / Board
Q.415 The twinkling of stars is due to the phenomenon of:
A reflection of light
B atmospheric refraction
C dispersion of light
D internal reflection
Discuss / Board
Q.416 The energy of the Sun is produced by the process of:
A nuclear fission
B nuclear fusion
C radioactive decay
D chemical combustion
Discuss / Board
Q.417 In a household electric circuit, appliances are connected in:
A series
B parallel
C mixed circuit
D neither series nor parallel
Discuss / Board
Q.418 The weight of a body is maximum at the:
A equator
B poles
C center of earth
D sub-tropics
Discuss / Board
Q.419 Which of the following is a property of ultrasonic waves?
A they can be heard by humans
B they have frequency less than 20 hz
C they can be used for cleaning small parts of machinery
D they travel slower than ordinary sound
Discuss / Board
Q.420 A metal rod is heated at one end. The heat travels to the other end by the process of:
A conduction
B convection
C radiation
D diffusion
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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