MCQ
An electron microscope is superior to an optical microscope in
- ✓Having better resolving power
- BBeing easy to handle
- CLow cost
- DQuickness of observation
✓
Answer
Correct option: A.
Having better resolving power
a
( a)In electron microscope, electron beam$(\lambda \approx 1{Å})$ is used so it’s $R.P.$ is approx. $5000$ times more than that of ordinary microscope $(\lambda \approx 5000{Å})$.
( a)In electron microscope, electron beam$(\lambda \approx 1{Å})$ is used so it’s $R.P.$ is approx. $5000$ times more than that of ordinary microscope $(\lambda \approx 5000{Å})$.
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
A light beam travelling along the $X$-axis with planar wavefront is incident on a medium of thickness $t$. In the region, where light is falling the refractive index can be taken to be varying such that $(d n / d y) > 0$. The light beam on the other side of the medium will emerge
→Two mutually perpendicular infinitely long straight conductors carrying uniformly distributed charges of linear densities $\lambda_{1}$ and $\lambda_{2}$ are positioned at a distance $r$ from each other. Force between the conductors depends on $r$ as
→Two capacitors $C_1$ and $C_2$ are charged to $120\ V$ and $200\ V$ respectively. It is found that connecting them together the potential on each one can be made zero. Then
→What percentage of original radioactive atoms is left after five half lives..........$\%$
→A wooden cube first floats inside water when a $200\,g$ mass is placed on it. When the mass is removed the cube is $2\,cm$ above water level. The side of cube is ........ $cm$
→Figures shows a convex lens cut symmetrically into two equal halves and separated laterally by a distance $h.$ A point object placed at a distance $30\, cm,$ from the lens halves, forms two real images separated by a distance $d$. A plot of $d$ versus $h$ is shown in figure. The focal length of the lens is ......$cm$
→Two circularly shaped linear polarisers are placed coaxially. The transmission axis of the first polariser is at $30^{\circ}$ from the vertical while the second one is at $60^{\circ}$, both in the clockwise sense. If an unpolarised beam of light of intensity $I=20 \,W / m ^{2}$ is incident on this pair of polarisers, then the intensities $I_{1}$ and $I_{2}$ transmitted by the first and second polarisers respectively, will be close to
→The graph between sine of angle of refraction $(sin\, r)$ in medium $2$ and sine of angle of incidence $(sin\, i)$ in medium $1$ indicates that ($tan 36^o $ $\approx$ $\frac{3}{4}$)
→The temperature of hot and cold end of a $20cm$ long rod in thermal steady state are at ${100^o}C$ and ${20^o}C$ respectively. Temperature at the centre of the rod is...... $^oC$
→A radioactive sample consists of two distinct species having equal number of atoms $N_0$ initially. The mean-life of one species is $\tau $ and of the other is $5\tau $. The decay products in both cases is stable. The total number of radioactive nuclei at $t = 5\tau $ is
→