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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS

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Application +4 | -1

One  light  year  is defined as the distance travelled by light in one year. The speed of light is

3 \times {10^8}\mathrm{m}{\mathrm{s}^{ - 1}}

. The same in metre is

View answer and explanation

Correct option: B

9.461 \times {10^{15}}m

Option B (

9.461 \times {10^{15}}m

) is correct because it is the product of the speed of light and the number of seconds in a year.

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Statement-I: Random errors can be positive or negative.
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of

\frac{1}{{\sqrt {{\varepsilon _0}{\mu _0}} }}