Download App

1. units,dimensions and measurement — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics1. units,dimensions and measurement1 Mark
MCQ
Given below are two statements :

Statements $I$ : Astronomical unit $(Au)$. Parsec $(Pc)$ and Light year $(ly)$ are units for measuring astronomical distances.

Statements $II:$ $Au < Parsec ( Pc ) < ly$

In the light of the above statements. choose the most appropriate answer from the options given below:

  • A
    Both Statements $I$ and Statements $II$ are correct.
  • ✓
    Statements $I$ is correct but Statements $II$ is incorrect.
  • C
    Both Statements $I$ and Statements $II$ are incorrect.
  • D
    Statements $I$ is incorrect but statements $II$ is correct.
✓

Answer

Correct option: B.
Statements $I$ is correct but Statements $II$ is incorrect.
b
$1 AU =1.496 \times 10^{11}\,m$

$1 \text { par sec }=3.08 \times 10^{16}\,m$

$1 \text { light year }=9.46 \times 10^{15}\,m$

So, $Au < ly < Per\,sec$

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 "M.C.Q (1 Marks)" from 1. units,dimensions and measurement→1. units,dimensions and measurement — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

In steady state graph between temp and distance from hot end is
→
The minimum intensity of sound is zero at a point due to two sources of nearly equal frequencies, when
→
A bullet is fired from a gun. The force on the bullet is given by:

$F =  600 - 2 \times 10^5\ t$

Where $F$ is in newton and $t$ in second. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?

→
A liquid of density $10^3 \,kg / m ^3$ and coefficient of viscosity $8 \times 10^{-2} \;decapoise$ is flowing in a tube of radius $2 \,cm$ with speed $2 \,m / s$. The Reynold's number is ..........
→
A block of ice at $-12^{\circ} C$ is slowly heated and converted into steam at $100^{\circ} C$. Which of the following curves best represents the event?
→
Which of the following dimensions will be the same as that of time?
→
The centre of gravity of the floating ship.
→
Acylindrical vessel open at the top is $20$ $cm$ high and $10$ $cm$ in diameter.Acircular hole whose cross-sectional area $1$ $cm^2$ is cut at the centre of the bottom of the vessel. Water flows from a tube above it into the vessel at the rate $100$ $cm^3s^{^{-1}}$. The height of water in the vessel under steady state is ....... $cm$ (Take $g=1000 $ $ cms^{^{-2}})$
→
A Carnot's heat engine works between the temperatures $427^{\circ} C$ and $27^{\circ} C$. $...........\,kcal / s$ amount of heat should it consume per second to deliver mechanical work at the rate of $1.0\,kW$
→
Second harmonic of open pipe is:
→