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.421 Specific resistance of a wire depends on its:
A length
B cross-sectional area
C material
D mass
Discuss / Board
Q.422 An iron nail sinks in water but floats on mercury because:
A mercury is heavier than iron
B density of mercury is higher than that of iron
C density of water is higher than iron
D iron is a metal
Discuss / Board
Q.423 A geostationary satellite revolves around the Earth from:
A north to south
B south to north
C east to west
D west to east
Discuss / Board
Q.424 The reason for using a concave mirror as a shaving mirror is that it forms:
A real and magnified image
B virtual and magnified image
C real and diminished image
D virtual and diminished image
Discuss / Board
Q.425 Which of the following works on the basis of the heating effect of current?
A electric motor
B electric bell
C electric iron
D telephone
Discuss / Board
Q.426 The time period of a simple pendulum on the moon:
A decreases
B increases
C remains the same
D becomes zero
Discuss / Board
Q.427 Which physical quantity has the same unit as that of impulse?
A force
B momentum
C power
D torque
Discuss / Board
Q.428 A piece of ice is floating in a beaker containing water. When the ice melts completely, the level of water will:
A fall
B rise
C remain same
D first rise then fall
Discuss / Board
Q.429 The clouds float in the atmosphere because of their low:
A temperature
B velocity
C pressure
D density
Discuss / Board
Q.430 An electric bulb marked 100W-220V is connected to a 110V supply. The power consumed will be:
A 100 w
B 50 w
C 25 w
D 200 w
Discuss / Board
Q.431 Safety fuses work on the principle of:
A magnetic effect of current
B chemical effect of current
C heating effect of current
D mechanical effect of current
Discuss / Board
Q.432 A ray of light traveling from a denser medium to a rarer medium at an angle greater than the critical angle undergoes:
A refraction
B total internal reflection
C diffraction
D scattering
Discuss / Board
Q.433 The working of a laundry dryer (spin dryer) is based on:
A centripetal force
B centrifugal force
C surface tension
D viscosity
Discuss / Board
Q.434 Rainbow is formed due to a combination of:
A refraction and absorption
B dispersion and focusing
C refraction, dispersion, and total internal reflection
D reflection and interference
Discuss / Board
Q.435 The value of acceleration due to gravity (g) is:
A independent of the mass of the earth
B independent of the mass of the body
C same at all latitudes
D zero on the surface of the earth
Discuss / Board
Q.436 Which of the following materials is used as a moderator in nuclear reactors?
A thorium
B heavy water
C radium
D cadmium
Discuss / Board
Q.437 A soap bubble appears colored in white light because of:
A scattering
B interference
C diffraction
D polarization
Discuss / Board
Q.438 The hydraulic lift works on the principle of:
A bernoullis law
B archimedes law
C pascals law
D keplers law
Discuss / Board
Q.439 The SI unit of power of a lens is:
A meter
B diopter
C watt
D candela
Discuss / Board
Q.440 What is the primary cause of wind?
A rotation of the earth
B uneven heating of the earth surface
C gravitational pull of the moon
D oceanic currents
Discuss / Board
Q.441 A solar cell works on the principle of:
A photovoltaic effect
B photoelectric effect
C thermionic emission
D compton effect
Discuss / Board
Q.442 The force that keeps the planets in orbit around the Sun is:
A magnetic force
B electrostatic force
C gravitational force
D nuclear force
Discuss / Board
Q.443 What is the reason for the reddish appearance of the Sun during sunrise and sunset?
A refraction of light
B diffraction of light
C scattering of light
D total internal reflection
Discuss / Board
Q.444 The magnifying power of an astronomical telescope can be increased by:
A increasing the focal length of the eyepiece
B decreasing the focal length of the eyepiece
C increasing the focal length of the objective
D both b and c
Discuss / Board
Q.445 Which of the following has the highest latent heat of vaporization?
A alcohol
B water
C ether
D chloroform
Discuss / Board
Q.446 The force of friction always acts in a direction:
A parallel to the applied force
B perpendicular to the surface
C opposite to the direction of motion
D along the direction of motion
Discuss / Board
Q.447 The time period of a seconds pendulum is:
A 1 second
B 2 seconds
C 0.5 second
D 4 seconds
Discuss / Board
Q.448 The handle of a pressure cooker is made of Bakelite because it is:
A a good conductor of heat
B a bad conductor of heat
C very light
D unbreakable
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.

For additional MCQs, detailed explanations, and exam discussions, visit Ask JK Exam Library , our dedicated question-and-answer platform for competitive exam aspirants.

Frequently Asked Questions

Select individual options to trigger real-time validation matrix hooks. This evaluates your answers instantly and shows the correct methodology in the solution box.

Absolutely. Our content team regularly updates the question bank to reflect the latest JKSSB, SSC, Banking, Railways, Defence, and other competitive exam trends.

The number of questions varies by topic and is regularly expanded to provide comprehensive practice coverage for competitive examinations.

Yes, you can attempt the questions as many times as needed to improve accuracy, speed, and concept retention.

Yes, important questions are accompanied by explanations and solutions to help candidates understand the correct answers effectively.

Yes, this topic is frequently covered in various competitive examinations and forms an important part of exam preparation strategies.

Absolutely. The questions are suitable for both beginners and advanced learners preparing for competitive examinations.

Topic-wise practice helps identify weak areas, strengthen concepts, and build confidence before attempting full-length mock tests.

Yes, the question database is continuously updated with new MCQs to maintain relevance and align with changing exam patterns.

Regular practice with topic-wise MCQs helps candidates reduce mistakes, improve accuracy, and perform better in actual examinations.

Yes, topic-specific MCQs provide a quick and effective revision method for reinforcing important concepts before exams.

The question bank includes a mix of easy, moderate, and challenging questions designed to reflect real competitive exam standards.

Solution View

Correct Answer
Detailed Explanation: