NEET Physics MCQs

Which relation is wrong

One  light  year  is defined as the distance travelled by light in one year. The speed of light is $3 imes {10^8}{\rm{m}}{{\rm{s}}^{ - 1}}$. The same in metre is

If 1 g cm ${{\rm{s}}^{ - 1}} = x$ newton-second, then the number x is equal to

The time taken by an electron to go from ground state to excited state is one shake (one shake = ${10^{ - 8}}$ s) this time in nanosecond will be

A pressure of ${10^6}$ dyne ${\rm{c}}{{\rm{m}}^{ - 2}}$ is equivalent to

One million electron $volt\;\left( {1\;MeV} \right)$ is equal to

In the context of accuracy of measurement and significant figures in expressing results of experiment, which of the following is/are correct

(1) Out of the two measurements 50.14 cm and 0.00025 ampere, the first one has greater accuracy

(2) If one travels 478 km by rail and 397 m by road, the total distance travelled is 478 km

Electron – volt is the unit of energy (1 eV = 1.6 $imes {10^{ - 19}}J)$. in H-atom, the binding energy of electron in first orbit is 13.6 eV. The same in joule (J) is

The length, breadth and thickness of a metal block is given by $l = 90 cm$, b=8 cm, t=2.45 cm. The volume of the block is

One slug is equivalent to 14.6 kg. A force of 10 pound is applied on a body of 1 kg. The acceleration of the body is