Physics MCQs (Part-1)

Friction always acts in a direction:

In fluid dynamics, what does the Reynolds number measure?

Absolute zero is a theoretical temperature at which:

What quantity measures the rate of change of angular displacement?

Pitot tubes are used to measure:

Surface tension in liquids is due to:

Which property of light changes when it goes from one medium to another causing refraction?

Which of these is not directly studied within fluid mechanics?

In a p-V diagram, an isothermal process is represented by:

What phenomenon is evident when light passes through a small aperture or around an obstacle?

What is the unit of frequency?

What is the phase difference between two points in a standing wave that are one half wavelength apart?

The work done on an object is equal to the change in its kinetic energy according to:

What does the first law of thermodynamics state?

Which of the following is NOT a condition for equilibrium in mechanics?

What is the speed of light in vacuum?

What type of image is formed by a concave mirror when the object is placed between the focal point and the mirror?

What is the critical angle of light traveling from water (n = 1.33) to air (n = 1.00)?

Which of the following is not a method of heat transfer?

The drag force on an object moving through a fluid depends on:

Which of the following describes a property that is directly proportional to the amount of substance?

An object is in uniform circular motion. Which of the following statements is true?

The latent heat of vaporization is the amount of heat required to:

Which factor does not affect the viscosity of a fluid?

What type of image is formed by a plane mirror?

The process of heat transfer from one particle of the body to another without the actual movement of the particles is known as:

Hooke’s Law relates to:

Which of the following is a unit of heat?

The thermal conductivity of a material is a measure of:

Which principle explains the bending of light as it passes from one medium to another?

The rate of doing work is defined as:

Which of the following is true for an ideal gas during an isothermal expansion?

Which force is responsible for keeping planets in orbit around the sun?

The heat transferred in an isochoric process is used to change:

According to Pascal's law:

What is the critical speed in fluid flow associated with?

Which principle explains the lift force on a wing in a flowing fluid?

Which of the following is not a property of an ideal fluid?

For an object moving in circular motion, the centripetal force must:

Which phenomenon is responsible for the splitting of white light into its component colors?

What is the value of gravitational acceleration near the surface of the Earth?

The product of an object’s mass and its velocity is known as:

The ability of a body to do work because of its position or shape is called:

In the absence of air resistance, objects fall at constant:

What is the zeroth law of thermodynamics primarily concerned with?

What does the slope of a velocity-time graph represent?

Kinetic energy of an object is proportional to:

In fluid dynamics, what is cavitation?

Which type of mirror is used to concentrate sunlight in solar cookers?

What is the fundamental frequency of a standing wave on a string that is 2 meters long and fixed at both ends, with a wave speed of 100 m/s?

What happens to the gravitational force between two objects if the distance between them is halved?

Prandtl number is a dimensionless quantity used in fluid dynamics to describe:

An object moves in a circle at constant speed. Its acceleration is:

The angular momentum of a system remains constant if:

What aspect of a wave is measured in Hertz?

What is the name of the point where light rays meet after reflection or refraction?

Archimedes' principle applies to:

What is the principle of superposition of waves?

Which lens would you use to correct nearsightedness?

Laplace's law relates surface tension to:

In which of the following processes is the work done by the gas zero?

What does the second law of thermodynamics imply?

Pressure-volume work is given by:

The principle of conservation of linear momentum applies when:

Thermal expansion coefficient of a material determines:

What is the Rayleigh criterion related to?

Hydrostatic pressure at a depth in a fluid is dependent on:

The specific heat capacity of a substance is:

Which of the following is not a characteristic of an electromagnetic wave?

What is the effect of temperature on surface tension of a liquid?

What is the wavelength of a wave that has a frequency of 2 Hz and a speed of 10 m/s?

In a reversible process, the change in entropy of the universe is:

What is the Brewster's angle?

What does the capillary action phenomenon in fluids demonstrate?

Which principle explains the behavior of fluids in motion?

The phenomenon of water climbing up a narrow tube against gravity is known as:

What is the primary difference between dynamic viscosity and kinematic viscosity?

The SI unit of pressure is:

Which of the following flow types is characterized by chaotic property changes?

What is the period of a wave with a frequency of 50 Hz?

The Stefan-Boltzmann law relates to:

Boyle's law states that the volume of a fixed mass of gas is:

Venturi meter is used to measure:

At what temperature does water have its maximum density?

What is the efficiency of an ideal heat engine operating between temperatures T1 and T2 (T1 > T2)?

Which of the following is NOT a scalar quantity?

What is the significance of 'c' in the equation E = mc^2?

Bernoulli's equation is a statement of the conservation of:

The efficiency of a real heat engine:

The path of a projectile in the absence of air resistance is:

What is the frequency of a wave whose period is 0.2 seconds?

What is the SI unit of viscosity?

Which phenomenon demonstrates the wave nature of electrons?

What describes the Young's double-slit experiment?

What is the harmonic series of a closed pipe?

What does the Clausius statement of the second law of thermodynamics say?

The principle of heat exchange with no net loss or gain in a system is known as:

The change in internal energy of a system undergoing an adiabatic process depends on:

A torque acting on an object tends to produce:

What is the condition for constructive interference in terms of the path difference of two waves?

Mach number is used in fluid dynamics to characterize:

According to Avogadro's law, equal volumes of gases at the same temperature and pressure contain:

Which of the following is a correct statement of Newton's third law of motion?

Stokes' law relates to which property of a fluid?

Which quantity measures the resistance of an object to change its state of motion?

The continuity equation in fluid mechanics expresses the conservation of:

What is the unit of force in the SI system?

The moment of inertia is a measure of:

Which law of motion explains the behavior of objects in motion when a net force acts on them?

Which of the following is an example of a longitudinal wave?

For an ideal gas, the internal energy is a function of:

What type of collision conserves both kinetic energy and momentum?

Which process occurs at constant temperature?

Flow rate in a pipe system is directly proportional to:

What is the unit of work in the SI system?

Which law is applied for the calculation of pressure drop in laminar flow through a circular pipe?

What is the speed of light in water, given its refractive index is about 1.33?

Magnus effect is related to:

Pressure is defined as force per unit:

Which of the following is a consequence of the wave-particle duality?

Which type of process involves no exchange of heat with the surroundings?

The tendency of an object to resist changes in its state of motion is known as its:

What happens to the wavelength of light as it enters a medium with a higher refractive index?

Which of the following is true for the work done by a conservative force around a closed path?

What property of a system is a measure of its disorder?

What is the formula for the Doppler effect in sound?

Which of the following describes the motion of an object in two or three dimensions under the influence of gravitational force only?

What does Snell's Law relate?

Which law forms the basis of the Kelvin-Planck statement of the second law of thermodynamics?

Which is not a dimensionless number in fluid mechanics?

In which type of wave do the particles of the medium move perpendicular to the direction of wave propagation?

The streamline model of fluid flow assumes:

A vector quantity includes both magnitude and:

What is the focal length of a convex lens that forms an image 10 cm from the lens when the object is 30 cm away?

Carnot engine efficiency depends on: