Question
Mention differences between light microscope and electron microscope.
✓
Answer
|
|
Light microscope
|
|
Electron microscope
|
|
1.
|
It uses glass lenses.
|
1.
|
It uses electromagnets.
|
|
2.
|
It uses a beam of light to illuminate the object.
|
2.
|
It uses a beam of electrons instead of light.
|
|
3.
|
Internal vacuum is not required.
|
3.
|
Internal vacuum is essential.
|
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
How will you separate camphor, common salt and iron nails from their mixture?
What is osmosis?
List five characteristics by which compounds can be distinguished from mixtures.
Write down the characters of bee variety suitable for bee keeping.
What is crystallisation? How can this technique be used to purify impure copper sulphate?
Describe the composition and functions of blood
Which has more atoms, $50g$ of aluminium or $50g$ of iron$?$ Illustrate your answer with the help of calculations.
$($Atomic masses: $Al = 27u; Fe = 56u)$
→$($Atomic masses: $Al = 27u; Fe = 56u)$
Velocity versus time graph of a ball of mass $50g$ rolling on a concrete floor is shown in Fig. Calculate the acceleration and frictional force of the floor on the ball.
→Consider the following sound waves marked A, B, C and D:
- Which two waves represent sounds of the same loudness but different pitch?
- Which two waves represent sounds of the same frequency but different loudness?
- State whether all these sound waves have been produced by the same vibrating body or different vibrating bodies?
- Which vibrating body/bodies could have generated the sound waves shown here?
The electronic configuration of an element Z is 2, 8, 8.
- What is the atomic number of the element?
- State whether element Z is a metal or a non-metal.
- What type of ion (if any) will be formed by an atom of element Z? Why?
- What is special about the outermost electron shell or the atom of this element?
- Give the name and symbol of element Z.
- Name the group of elements to which Z belongs.