Sets
Physics Set 3
30 questions 1. For the lens in the previous situation (f = +20 cm, u = −30 cm), the magnification produced is:
2. On a graph of density against distance for a sound wave, the highest point (crest) corresponds to a region of:
3. The Sun's energy reaches the Earth through:
4. One millibar is equal to:
5. A magnifying glass is a:
6. The number of unique chemical elements known today is:
7. Rutherford showed that α-particles are:
8. The wavelength of a 2000 Hz sound wave in air, taking the speed of sound as 344 m s⁻¹, is:
9. The Moon can cover the Sun completely during a total solar eclipse because:
10. Planets do not twinkle because they are:
11. John Dalton proposed his atomic theory in:
12. The instrument fitted in vehicles to measure the distance travelled is the:
13. The number of neutrons in ¹⁴₆C is:
14. The melting point of tungsten is:
15. The kinetic energy of a 2 kg object moving with a velocity of 6 m s⁻¹ is:
16. In the Northern Hemisphere, ocean gyres rotate:
17. Winds blow from a region of:
18. Heat from the Sun reaches the Earth through:
19. The gravitational constant G was first determined experimentally in:
20. The presence of excessive artificial light at night is termed: