In 24 days a radioactive isotope decreases in mass from 128g to 2g. What is the half-life of the radioactive material?
Physics Past Questions
Updated description
Take a test
Custom CBT
Create and set up a CBT environment with your preferred subjects.
JAMB CBT Simulator
Practice JAMB CBT with real UTME past questions in CBT format.
WAEC CBT Practice 2026 Simulator
CB-WASSCE styled past question practice.
NECO CBT Practice 2026 Simulator
SSCE & GCE styled past question practice.
Past Questions
141 questionsA wave is represented by the equation y = 0.5 sin 0.4π(X - 60t), where the distance (X) is measured in centimetres and time (t) in seconds. What is the wavelength of the wave?
An astronaut is walking on the moon where the magnitude of the acceleration due to gravity "g’ is one-sixth that on earth. Compared with their magnitudes on the earth, his mass and weight on the moon are
Which statement is TRUE of a block of stone of mass m, with zero momentum?
A transformer is connected to a 250 V a.c. supply. The primary coil has 5000 turns and the secondary voltage is found to be 10 V. What is the number of turns in the secondary coil?
The falling of light energy on a metal such that electrons are liberated from the metal is called
The main function of the commutator in a simple d.c. motor is to
When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eye piece is 5.0cm. What is the distance between the lenses?
When water is heated between 0°C and 4°C, it's density