Physics Syllabus (JEE Main)
Q. Which principle explains why a ship floats on water?
A.
Archimedes' principle
B.
Bernoulli's principle
C.
Pascal's principle
D.
Newton's third law
Show solution
Solution
Archimedes' principle states that a body submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.
Correct Answer: A — Archimedes' principle
Learn More →
Q. Which process involves a change in temperature due to heat transfer?
A.
Isothermal process
B.
Adiabatic process
C.
Isobaric process
D.
Isochoric process
Show solution
Solution
An isobaric process occurs at constant pressure and can involve a change in temperature due to heat transfer.
Correct Answer: C — Isobaric process
Learn More →
Q. Which process involves a change in temperature without a change in heat content?
A.
Isothermal process
B.
Adiabatic process
C.
Isochoric process
D.
Isobaric process
Show solution
Solution
In an adiabatic process, there is no heat exchange with the surroundings, leading to a change in temperature.
Correct Answer: B — Adiabatic process
Learn More →
Q. Which process involves a change in temperature without a change in phase?
A.
Melting
B.
Boiling
C.
Heating
D.
Condensation
Show solution
Solution
Heating involves a change in temperature without a change in phase.
Correct Answer: C — Heating
Learn More →
Q. Which process involves the transfer of heat through the movement of fluids?
A.
Conduction
B.
Convection
C.
Radiation
D.
Insulation
Show solution
Solution
Convection is the process of heat transfer through the movement of fluids.
Correct Answer: B — Convection
Learn More →
Q. Which quantum number describes the orientation of an orbital?
A.
Principal quantum number
B.
Azimuthal quantum number
C.
Magnetic quantum number
D.
Spin quantum number
Show solution
Solution
The magnetic quantum number describes the orientation of an orbital in space.
Correct Answer: C — Magnetic quantum number
Learn More →
Q. Which theorem is used to find the moment of inertia of a body about an axis that is parallel to an axis through its center of mass?
A.
Perpendicular axis theorem
B.
Parallel axis theorem
C.
Pythagorean theorem
D.
Conservation of angular momentum
Show solution
Solution
The parallel axis theorem is used to find the moment of inertia about an axis parallel to one through the center of mass.
Correct Answer: B — Parallel axis theorem
Learn More →
Q. Which type of damping results in the system returning to equilibrium without oscillating?
A.
Underdamping
B.
Critical damping
C.
Overdamping
D.
No damping
Show solution
Solution
Critical damping allows the system to return to equilibrium in the shortest time without oscillating.
Correct Answer: B — Critical damping
Learn More →
Q. Which type of diffraction pattern is produced by a circular aperture?
A.
Single-slit pattern
B.
Double-slit pattern
C.
Airy pattern
D.
Newton's rings
Show solution
Solution
A circular aperture produces an Airy pattern, characterized by a central bright spot surrounded by concentric dark and bright rings.
Correct Answer: C — Airy pattern
Learn More →
Q. Which type of lens is used to correct hyperopia (farsightedness)?
A.
Concave lens
B.
Convex lens
C.
Bifocal lens
D.
Cylindrical lens
Show solution
Solution
A convex lens is used to converge light rays for hyperopic correction.
Correct Answer: B — Convex lens
Learn More →
Q. Which type of light is typically not polarized?
A.
Natural light
B.
Laser light
C.
Reflected light
D.
Light from a LED
Show solution
Solution
Natural light is typically unpolarized as it consists of waves vibrating in multiple planes.
Correct Answer: A — Natural light
Learn More →
Q. Which type of noise is most commonly associated with communication systems?
A.
White noise
B.
Impulse noise
C.
Thermal noise
D.
Shot noise
Show solution
Solution
White noise is the most commonly associated noise in communication systems, affecting signal quality.
Correct Answer: A — White noise
Learn More →
Q. Which type of orbit allows a satellite to cover the entire surface of the Earth over time?
A.
Geostationary orbit
B.
Polar orbit
C.
Circular orbit
D.
Elliptical orbit
Show solution
Solution
A polar orbit allows a satellite to pass over the entire surface of the Earth as the Earth rotates beneath it.
Correct Answer: B — Polar orbit
Learn More →
Q. Which type of orbit allows a satellite to cover the entire surface of the Earth?
A.
Geostationary orbit
B.
Polar orbit
C.
Elliptical orbit
D.
Circular orbit
Show solution
Solution
A polar orbit allows a satellite to pass over the entire surface of the Earth as the Earth rotates beneath it.
Correct Answer: B — Polar orbit
Learn More →
Q. Which type of orbit allows a satellite to pass over the same point on the Earth's surface at the same local solar time every day?
A.
Polar orbit
B.
Geostationary orbit
C.
Sun-synchronous orbit
D.
Elliptical orbit
Show solution
Solution
A sun-synchronous orbit allows a satellite to pass over the same point on the Earth's surface at the same local solar time every day, as it is synchronized with the Earth's position relative to the Sun.
Correct Answer: C — Sun-synchronous orbit
Learn More →
Q. Which type of radiation consists of helium nuclei?
A.
Alpha radiation
B.
Beta radiation
C.
Gamma radiation
D.
X-rays
Show solution
Solution
Alpha radiation consists of helium nuclei, which are emitted during certain types of radioactive decay.
Correct Answer: A — Alpha radiation
Learn More →
Q. Which type of satellite orbit is best for monitoring weather patterns?
A.
Geostationary orbit
B.
Polar orbit
C.
Elliptical orbit
D.
Low Earth orbit
Show solution
Solution
Geostationary satellites are ideal for monitoring weather patterns as they provide a constant view of the same area.
Correct Answer: A — Geostationary orbit
Learn More →
Q. Which type of satellite orbit is best for weather monitoring?
A.
Geostationary orbit
B.
Polar orbit
C.
Elliptical orbit
D.
Low Earth orbit
Show solution
Solution
Geostationary orbits are ideal for weather monitoring as they provide a constant view of the same area of the Earth.
Correct Answer: A — Geostationary orbit
Learn More →
Q. Which type of semiconductor has an excess of electrons?
A.
P-type
B.
N-type
C.
Intrinsic
D.
Extrinsic
Show solution
Solution
N-type semiconductors have an excess of electrons due to the addition of donor impurities.
Correct Answer: B — N-type
Learn More →
Q. Why is a potentiometer preferred over a voltmeter for measuring voltage?
A.
It is cheaper
B.
It provides more accurate measurements
C.
It is easier to use
D.
It requires less power
Show solution
Solution
A potentiometer is preferred because it provides more accurate measurements as it does not draw current from the circuit.
Correct Answer: B — It provides more accurate measurements
Learn More →
Showing 4981 to 5000 of 5000 (167 Pages)