The time period of a seconds pendulum Is
1). 1 second
2). 2 seconds
3). 5second
4). 15 seconds
1. Air pollution by "Fly ash" is caused?by:
2. Which of the following is an example for cantilever beam?
5. Which combination of colour is the most convenient during day and night time ?
6. Infrasonic sound has a frequency lower than
7. A piece of wood is held under water. The up thrust on it will be:
8. A spherical ball made of steel when dropped in mercury container will
9. The purpose of choke in a fluorescent lamp is :
10. The mass of a star is two times the mass of the Sun. How it will come to an end ?