physics questions with answers
1,293 multiple-choice questions. Open any question for its answer and explanation.
- Physicists at the National Institute of Standards and Technology (USA) have built an atomic clock; now recognised as the world's most precise clock. It is based on
- When ice melts, then the
- The ratio of radii of two nuclei of mass numbers 1 and 27 is
- Which one of the following liquids is very good conductor of heat ?
- The maximum density of water is at
- Photovoltaic cells are
- A man is standing on a sensitive balance. If he inhales deeply, the reading of the balance
- Stephen Hawking is known for his extensive work in the field of
- Which one of the following statements is not true about cosmic rays?
- Lightning conductor is made up of
- The working principle of atom bomb is nuclear fission of uranium and the working principle of hydrogen bombis :
- In colour monitor, primary additive colours are :
- Which one of the following is anisotropic in nature?
- The velocity of wind is measured by
- The weight of human body is
- The principle of thermal ionisation is an outstanding contribution of
- How many images will be formed if a point light source is placed between two parallel plane mirrors?
- Laser is a device for producing
- The SI unit of magnetic flux is :
- In wind power, which form of energy is converted into electrical energy?
- Hydrogen bomb is based on the principle of
- The inside pressure of the soap bubble is
- The concept of expanding universe is based on
- The resistance of a semiconductor on heating
- Which of the following is a semiconductor?