Physics 1st Paper CQ-Cumilla Board-2019
1. Two tuning forks A and B are sounded in a laboratory, the wave that is produced is shown in the figure below using graph:
2. Manha pulled a horizontally floating wire of length vertically upward from the surface of water. Later an iron sphere is released into water and measured terminal velocity. After that, the temperature of water is increased and releasing the same sphere and measured terminal velocity.
3. A bus of mass is moving with kinetic energy on a road and suddenly faced a turn which radius of curvature is , shown in the figure below:
4. Abir brought a second pendulum from a place of acceleration due to gravity at a depth in mine and at the apex of a hill and observed, the pendulum moves 30 s slow per hour at both the place. Abir's friend Zesan said, it is possible to determine the height of the hill from those information. [Radius of the earth ]
5. When a bus started moving at the same time a passenger runs to catch the bus lacking behind from the bus. The graph of the passenger and the bus versus time are given below :