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.271 Which of the following logic gates is universally known as a universal gate?
A and gate
B or gate
C nand gate
D not gate
Discuss / Board
Q.272 A semiconductor p-n junction diode is most commonly used in circuits as a:
A rectifier
B amplifier
C oscillator
D modulator
Discuss / Board
Q.273 If the angle between two plane mirrors is 60 degrees, the number of images formed of an object placed between them is:
A 5
B 6
C 7
D 8
Discuss / Board
Q.274 Optical fibers, used heavily in telecommunications, function based on the principle of:
A interference of light
B diffraction of light
C total internal reflection
D polarization of light
Discuss / Board
Q.275 Which portion of the electromagnetic spectrum is utilized in a typical television remote control?
A ultraviolet rays
B x rays
C infrared rays
D radio waves
Discuss / Board
Q.276 If a hollow metal sphere is positively charged, the electric field inside the sphere will be:
A positive and uniform
B negative and uniform
C zero
D varies inversely with radius
Discuss / Board
Q.277 What is the primary function of a fuse wire in an electrical circuit?
A to prevent low voltage
B to increase current flow
C to prevent excessively high currents
D to convert ac to dc
Discuss / Board
Q.278 An object weight 60N on earth. What will be its weight and mass respectively on the moon?
A 10n and 6kg
B 60n and 10kg
C 10n and 10kg
D 10n and 60kg
Discuss / Board
Q.279 If a wire is stretched to double its original length, its resistance will become:
A twice
B half
C four times
D one fourth
Discuss / Board
Q.280 Which principle is utilized in the hydraulic brakes of heavy vehicles?
A archimedes principle
B pascals principle
C bernoullis principle
D newtons third law
Discuss / Board
Q.281 A piece of ice is floating in a beaker filled with water. When the whole ice melts, the water level will:
A rise
B fall
C remain the same
D first rise then fall
Discuss / Board
Q.282 Which of the following colors of visible light has the longest wavelength?
A violet
B blue
C yellow
D red
Discuss / Board
Q.283 What kind of image is formed by a convex mirror used as a rear-view mirror in vehicles?
A real inverted and diminished
B virtual erect and magnified
C virtual erect and diminished
D real erect and diminished
Discuss / Board
Q.284 Ultrasonic waves are sound waves with a frequency that is:
A less than 20 hz
B between 20 hz and 20 khz
C greater than 20 khz
D equal to the speed of light
Discuss / Board
Q.285 If a pendulum clock is taken from the equator to the poles, what will happen to its time period?
A it increases
B it decreases
C it remains constant
D it stops completely
Discuss / Board
Q.286 The specific resistance or resistivity of a metallic wire depends solely on:
A its length
B its cross sectional area
C the material it is made of
D its mass
Discuss / Board
Q.287 A geostationary satellite revolves around the Earth with a time period of:
A 12 hours
B 24 hours
C 48 hours
D 365 days
Discuss / Board
Q.288 Which elementary particle acts as the carrier of the electromagnetic force?
A gluon
B photon
C graviton
D w boson
Discuss / Board
Q.289 What is the physical principle behind the working of a standard optical microscope?
A refraction
B total internal reflection
C dispersion
D polarization
Discuss / Board
Q.290 The energy of an electron in the nth Bohr orbit of a hydrogen atom is proportional to:
A n
B 1/n
C n squared
D 1/n squared
Discuss / Board
Q.291 Which logic gate outputs true only when all of its inputs are true?
A or gate
B nor gate
C and gate
D xor gate
Discuss / Board
Q.292 In a nuclear reactor, heavy water is commonly utilized as a:
A coolant only
B moderator only
C both coolant and moderator
D neutron absorber
Discuss / Board
Q.293 What is the equivalent resistance when three identical resistors of R ohms are connected in parallel?
A 3R
B R/3
C 3/R
D R
Discuss / Board
Q.294 Which among the following is not an electromagnetic wave?
A x rays
B cathode rays
C gamma rays
D microwaves
Discuss / Board
Q.295 When ice melts into water at 0 degrees Celsius, its volume:
A increases
B decreases
C remains constant
D first increases then decreases
Discuss / Board
Q.296 A vector quantity must definitively possess both magnitude and:
A mass
B velocity
C direction
D acceleration
Discuss / Board
Q.297 If a body is dropped from a height h, its velocity right before hitting the ground is:
A gh
B sqrt(gh)
C sqrt(2gh)
D 2gh
Discuss / Board
Q.298 Which physical law dictates that the induced emf opposes the change in magnetic flux producing it?
A faradays law
B lenzs law
C ampères law
D biot savart law
Discuss / Board
Q.299 What happens to the resistance of a pure semiconductor when its temperature is increased?
A increases
B decreases
C remains same
D becomes zero
Discuss / Board
Q.300 Which wave characteristic dictates the loudness of a sound?
A wavelength
B frequency
C amplitude
D wave speed
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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