JAMB 2024 Calculate the value of two equal charges if they repel one another with a force of 0.1 N when situated 50 cm apart in a vacuum. (Take 1/(4πε₀) = 9 ×…
JAMB 2024 An metal rod heated from 30°C to 80°C. The final length of the metal is 115 cm and the coefficient of linear expansion is 3 × 10⁻³ K⁻¹. What is the…
JAMB 2024 Ultraviolet light with a wavelength of 280 nm is used in an experiment on the photoelectric effect with a lithium cathode (work function, W_o = 2.5…
JAMB 2024 The displacement of a particle of a string carrying a travelling wave is given by y = (3.0 cm) sin 6.28(0.50x − 50 t), where x is in centimetre and t…
JAMB 2024 A proton moves at 8.00 × 10⁶ m/s along the x-axis. It enters a region in which there is a magnetic field of magnitude 2.50 T, directed at an angle of…
JAMB 2024 Which type of radiation is most likely to be emitted by an unstable nucleus with excess energy, and why? Verified
JAMB 2024 The instantaneous current in a circuit is given by i = 4sin(ωt + π/4). The RMS value of the current is
JAMB 2024 A particle having initial velocity 5 ms⁻¹ moves with a constant acceleration of 2 ms⁻² for 10 s. Find the displacement of the particle in the last 1…
JAMB 2024 The angle of refraction (r) of a ray of white light from air through a triangular glass prism of refractive index 1.5 is 29.0°. Calculate the angle…
JAMB 2024 Which of the following media allow the transmission of sound waves through them? I. Air II. Liquids III. Solids