Question
Planck constant has the same dimensions as:
- Force × time.
- Force × distance.
- Force × speed.
- Force × distance × time.
✓
Answer
- Force × distance × time.
Planck's constant
$\text{h}=\frac{\text{E}}{\text{v}}=\frac{\text{Force}\times\text{distanace}}{\text{frequency}}$
$\Rightarrow\text{h}=\text{force}\times\text{distance}\times{\text{times}}.$
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
The material of wire of potentiometer is(a) Copper(b) Steel(c) Manganin(d) Aluminium
A current source sends a current $\text{I}-\text{i}_0\cos(\omega\text{t}).$ when connected across an unknown load, it gives a voltage output of $\text{v}=\text{v}_0\sin[\omega\text{t}+(\frac{\pi}{4})]$across that load. then the voltage across the current source may be brought in phase with the current through it by.
→Self induction of a solenoid is(a) Directly proportional to current flowing through the coil(b) Directly proportional to its length(c) Directly proportional to area of cross-section(d) Inversely proportional to area of cross-section
I a.m.u. is equivalent to the energy of :
The energy band diagrams for three semiconductor samples of silicon are as shown. We can then assert that
AM is used for broadcasting because(a) It is more noise immune than other modulation systems(b) It requires less transmitting power compared with other systems(c) Its use avoids receiver complexity(d) No other modulation system can provide the necessary bandwidth faithful transmission
Three resistors each of 4Ω are connected together to form a network. The equivalent resistance of the network cannot be(a) 1.33 Ω(b) 3.0 Ω(c) 6.0 Ω(d) 12.0 Ω
Electrical conductivity of a semiconductor(a) Decreases with the rise in its temperature (b) Increases with the rise in its temperature (c) Does not change with the rise in its temperature(d) First increases and then decreases with the rise in its temperature
The maximum illumination on a screen at a distance of 2 m from a lamp is 25 lux. The value of total luminous flux emitted by the lamp is(a) 1256 lumen(b) 1600 lumen(c) 100 candela(d) 400 lumen
Time period for a magnet is $T.$ If it is divided in four equal parts along its axis and perpendicular to its axis as shown then time period for each part will be
→