Where does the centre of gravity of a rubber ring lie?
on the outer surface
in the inner surface
at the centre of the ring
None of the above
- The largest planet in the solar system is
- A small bubble of air deep down in a lake rises up to the top of the lake. The volume of the bubble…
- A stationary elevated object has
- Out of the following which element has the longest half-life period?
- The presence of impurities
- Which metal is used in storage batteries?
- The red colour of the setting sun is due to
- Nuclear fission process means
- The strength of an electromagnet can be increased by
- Frictional force acts in
- The heat produced in a conductor due to the passage of a current through it is proportional to
- Skating on ice is possible because
- Which of the following revolves round the nucleus in an atom?
- The source of electric energy in an artificial satellite is
- When water is cooled from 4ºC to 2ºC its density
- The planet that moves fastest around the sun is
- The Solar System lies near the edge of a galaxy known as
- Electromagnets are used in
- When white light passes through a glass prism we get a spectrum on the other side of the prism. In the…
- The mirage is a phenomenon
- The leader of the team who succeeded in constructing the first nuclear reactor (an atomic pile) in the…
- The radius of an atom is approximately
- Dioptre is the unit of power of
- The orbit of Venus lies between those of
- When one enters a dark room after being in bright light one is not able to see anything clearly for…
- Powder clings to the skin because of
- The difference between planets and stars is
- The property of a fluid by which it resists relative motion within itself is known as
- Sun spots are
- In an electrical circuit, a fuse is connected