Download App

Units, Dimensions and Measurement — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsUnits, Dimensions and Measurement1 Mark
MCQ
Number of base $Sl$ units is
  • A
    4
  • ✓
    7
  • C
    3
  • D
    5
✓

Answer

Correct option: B.
7
(b)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Units, Dimensions and Measurement→Units, Dimensions and Measurement — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

Two voltameters, one of copper and another of silver, are joined in parallel. When a total charge $q$ flows through the voltameters, equal amount of metals are deposited. If the electrochemical equivalents of copper and silver are $Z_1$ and $Z_2$ respectively the charge which flows through the silver voltameter is
→
When white light passes through the achromatic combination of prisms, then what is observed
→
Water is used to cool radiators of engines, because
→
The radius of curvature of convex surface of a thin plano-convex lens is $15 \mathrm{~cm}$ and refractive index of its material is $1.6.$ The power of the lens will be
→
The ratio of densities of nitrogen and oxygen is $14:16.$ The temperature at which the speed of sound in nitrogen will be same at that in oxygen at $55 {}^\circ\mathrm{C}$ is
→
One mole of an ideal gas at an initial temperature of $T K$ does $6 R$ joules of work adiabatically. If the ratio of specific heats of this gas at constant pressure and at constant volume is $5 / 3$, the final temperature of gas will be
→
The $K_\alpha X$-ray emission line of tungsten occurs at $\lambda=0.021 \mathrm{~nm}$. The energy difference between $K$ and $L$ levels in this atom is about
→
A $220$ volt, $1000 W$ bulb is connected across a $110$ volt mains supply. The power consumed will be
→
In an astronomical telescope, the focal length of objective lens and eye-piece are $150 \mathrm{~cm}$ and $6 \mathrm{~cm}$ respectively. In case when final image is formed at least distance of distinct vision. the magnifying power is
→
Three prisms $1, 2$ and $3$ have the prism angle $A=60$, but their refractive indices are respectively $1.4, 1.5$ and $1.6$. If $\delta, \delta, \delta$ be their respective angles of deviation then
→