The spectrum of white light can be studied by

A. a microscope

B. a telescope

C. a stereoscope

D. a spectroscope

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Astigmatism, a structural defect of the eye, is due to
  2. Sound travels fastest in
  3. When the disturbed electrons of an exited atom transfer back into lower energy levels they emit energy…
  4. Light from the sun reaches the earth in
  5. The instrument used to measure atmospheric pressure is
  6. A heavenly body similar in nature to the sun intensely hot glowing mass that produces its energy by…
  7. The completely dark portion of a shadow of an object is known as
  8. Resistance is measured in
  9. The temperature of a large bucket-full of hot water (a few degrees below boiling point) is lower than…
  10. In a vacuum the following three articles are dropped at the same time and from the lame height. Which…
  11. Alternating Current (AC) is more advantageous than direct current because
  12. The rocket engine is motivated by jet propulsion which uses the famous
  13. The world's first artificial satellite Sputnik I was launched by Russia in
  14. In which of the following will a piece of iron weigh most?
  15. A person does not sink in the Dead Sea because
  16. Atoms which have the same atomic number but different mass numbers are called
  17. Formation of shadows can be explained by
  18. It is easier to climb down a staircase than climb up because in climbing down
  19. A car parked in the sun with its windows closed gets terribly hot inside. This is due to
  20. When an incident beam of light strikes the surface of a glass slab normally, the refracted beam
  21. In a microphone
  22. A piece of cork la embedded inside an ice block which floats in water. What will happen to the level…
  23. Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water
  24. The velocity required to place a vehicle in orbit round the moon is _________ that required to place…
  25. Echoes are produced by
  26. A permanent magnet may be demagnetised by
  27. A balloon ruled with hydrogen will
  28. A hydraulic brake in an automobile uses
  29. The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the…
  30. The velocity of sound in air