Physics Syllabus (JEE Main)

Q. If the radius of the Earth is R and a satellite is in a geostationary orbit, what is the height of the satellite above the Earth's surface?
  • A. R/2
  • B. R
  • C. R/3
  • D. R/4
Q. If the radius of the Earth is R and a satellite is in a low Earth orbit at a height h, what is the expression for the gravitational force acting on the satellite?
  • A. G * M * m / (R + h)^2
  • B. G * M * m / R^2
  • C. G * M * m / (R - h)^2
  • D. G * M * m / (R + h)
Q. If the radius of the Earth is R, what is the gravitational acceleration at a height R above the Earth's surface?
  • A. g/4
  • B. g/2
  • C. g
  • D. g/8
Q. If the radius of the Earth is R, what is the radius of a satellite in a geostationary orbit?
  • A. R
  • B. 2R
  • C. 3R
  • D. 4R
Q. If the radius of the Earth were to double, what would happen to the gravitational acceleration at its surface?
  • A. It would double
  • B. It would remain the same
  • C. It would be halved
  • D. It would be quartered
Q. If the radius of the Earth were to double, what would happen to the gravitational force experienced by a satellite in low Earth orbit?
  • A. It would double
  • B. It would remain the same
  • C. It would decrease to one-fourth
  • D. It would increase to four times
Q. If the radius of the Earth were to double, what would happen to the weight of an object on its surface?
  • A. It would double
  • B. It would remain the same
  • C. It would become four times less
  • D. It would become four times more
Q. If the radius of the Earth were to increase by a factor of 2, what would happen to the gravitational acceleration at its surface?
  • A. It would double
  • B. It would remain the same
  • C. It would halve
  • D. It would become one-fourth
Q. If the radius of the Earth were to shrink to half its size while keeping its mass constant, what would happen to the gravitational acceleration at the surface?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the radius of the orbit of a satellite is doubled, what happens to its orbital speed?
  • A. It remains the same
  • B. It doubles
  • C. It increases by a factor of √2
  • D. It decreases by a factor of √2
Q. If the rate of change of current in an inductor is 2 A/s, what is the induced EMF if the inductance is 3 H?
  • A. 6 V
  • B. 3 V
  • C. 2 V
  • D. 1 V
Q. If the refractive index of a medium is 1.33, what is the critical angle for total internal reflection?
  • A. 48.6°
  • B. 60.0°
  • C. 30.0°
  • D. 45.0°
Q. If the refractive index of a medium is 1.33, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 41.8°
  • B. 48.6°
  • C. 53.1°
  • D. 60.0°
Q. If the refractive index of a medium is 1.33, what is the speed of light in that medium if the speed of light in vacuum is 3 x 10^8 m/s?
  • A. 2.25 x 10^8 m/s
  • B. 2.5 x 10^8 m/s
  • C. 2.75 x 10^8 m/s
  • D. 3 x 10^8 m/s
Q. If the refractive index of a medium is 1.5, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 41.8°
  • B. 48.6°
  • C. 60.0°
  • D. 90.0°
Q. If the refractive index of a medium is 1.5, what is the speed of light in that medium? (Speed of light in vacuum = 3 x 10^8 m/s)
  • A. 2 x 10^8 m/s
  • B. 1.5 x 10^8 m/s
  • C. 3 x 10^8 m/s
  • D. 4.5 x 10^8 m/s
Q. If the refractive index of a medium is 1.5, what is the speed of light in that medium?
  • A. 2 x 10^8 m/s
  • B. 3 x 10^8 m/s
  • C. 1.5 x 10^8 m/s
  • D. 4.5 x 10^8 m/s
Q. If the refractive index of a medium is 1.5, what is the wavelength of light in that medium if the wavelength in vacuum is 600 nm?
  • A. 400 nm
  • B. 600 nm
  • C. 800 nm
  • D. 900 nm
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection at the interface with air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection when light travels from this medium to air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the critical angle for total internal reflection?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is 2.0, what is the maximum angle of incidence for total internal reflection when light travels to air?
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°
Q. If the refractive index of a medium is greater than 1, how does it affect the speed of light in that medium?
  • A. Increases speed
  • B. Decreases speed
  • C. No effect
  • D. Depends on wavelength
Q. If the refractive index of a medium is greater than 1, what happens to the speed of light in that medium?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes infinite
Q. If the refractive index of a medium is greater than 1, what happens to the speed of light in that medium compared to vacuum?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes infinite
Q. If the refractive index of a medium is greater than 1, what happens to the wavelength of light in that medium?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes zero
Q. If the refractive index of a medium is greater than 1, what happens to the wavelength of light in that medium compared to its wavelength in vacuum?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes zero
Q. If the refractive index of a thin film is greater than that of the surrounding medium, what happens to the phase of the reflected wave?
  • A. No phase change
  • B. Phase change of π
  • C. Phase change of 2π
  • D. Phase change of λ/2
Q. If the refractive index of diamond is 2.42, what is the critical angle for total internal reflection when light travels from diamond to air?
  • A. 24.4°
  • B. 30.0°
  • C. 36.9°
  • D. 41.8°
Q. If the resistance in a circuit is doubled while keeping the voltage constant, what happens to the current?
  • A. It doubles.
  • B. It halves.
  • C. It remains the same.
  • D. It quadruples.
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