Question
Length cannot be measured by
✓
Answer
The length can be measured in terms of Fermi, Micron and Light year. whereas a unit used to express electric dipole moments of molecules is $debye$.
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
From a balloon moving upwards with a velocity of $12\,ms^{-1}$, a packet is released when it is at a height of $65\, m$ from the ground. The time taken by it to reach the ground is...........$s$ $(g = 10\,ms^{-1})$,
→Two radioactive nuclei $P$ and $Q$ in a given sample decay into a stable nucleus $R$. At time $t = 0$, number of $P$ species are $4\, N_0$ and that of $Q$ are $N_0$. Half-life of $P$ (for conversion to $R$) is $1$ minute where as that of $Q$ is $2$ minutes. Initially there are no nuclei of $R$ present in the sample. When number of nuclei of $P$ and $Q$ are equal, the number of nuclei of $R$ present in the sample would be
→In the figure four plate characteristics of a triode at different grid voltage are shown. The difference between successive grid voltage is $1 V.$ Which curve will have maximum grid voltage and what is its value?
→If an observer is moving with respect to a stationary electron, then he observes
Light from a point source in air falls on a convex curved surface of radius $20 \mathrm{~cm}$ and refractive index $1.5.$ If the source is located at $100 \mathrm{~cm}$ from the convex surface, the image will be formed at $\mathrm{cm}$ from the object.
→The nuclei of which one of the following pairs of nuclei are isotones
Two identical thin rings, each of radius $R $ meter are coaxially placed at distance $R$ meter apart. If $Q_1$ and $Q_2$ coulomb are respectively the charges uniformly spread on the two rings, the work done in moving a charge $q$ from the centre of one ring to that of the other is
→In figure the cube is of $40\,\, cm$ edge. Four straight segment of wire $ab, bc, cd$ and $da$ form a closed loop that carries a current $I = 5\,A$. A uniform magnetic field $0.02\,\,T$ is in $+y\,-$ direction ratio of magnetic force on segement $ab$ and $bc$ is
→Two wires of the same material have lengths in the ratio 1 : 2 and their radii are in the ratio $1:\sqrt 2 $. If they are stretched by applying equal forces, the increase in their lengths will be in the ratio
→The temperature dependence of resistances of $Cu$ and undoped $Si$ in the temperature range $300-400\;K$, is best described by
→