Sets
Physics Set 15
30 questions 1. The relation between frequency ν and time period T is:
2. The projection of uniform circular motion on a diameter of the circle executes:
3. Which of the following is a contact force?
4. The time period of a simple pendulum of length L at a place where the acceleration due to gravity is g is:
5. In a hydraulic lift with small piston area A₁ and large piston area A₂, the mechanical advantage is:
6. In a cathode ray discharge tube, the rays travel:
7. Monitoring airspace by detecting the low frequency humming of drones and aircraft is called:
8. The pre-monsoon local thunderstorms known as Bordoisila occur in:
9. The SI unit of work is:
10. Consider the following statements about a particle in uniform circular motion:
(I) Its projection on the y-axis is also an SHM of the same amplitude as that on the x-axis.
(II) The two projections differ in phase by π/2.
(III) The force in linear SHM is the same as the centripetal force of the circular motion.
Which of the above is/are correct?
11. Among the following metals, the highest thermal conductivity is that of:
12. The SI unit of electrical resistivity is:
13. The flow of cooler air from the valley up the warm mountain slopes during the day is called:
14. The ozone layer in the upper atmosphere mostly absorbs:
15. Infrasonic waves are used for detecting:
16. Atmospheric oxygen is mainly restored through:
17. Photosynthesis and respiration form part of the carbon cycle that operates over a time scale of:
18. Advanced computer models that simulate the Indian monsoon are run at the Indian Institute of Tropical Meteorology, located in:
19. The diameter of the reflecting surface of a spherical mirror is called its:
20. As an object falls freely under gravity, its mechanical energy: