Dawn of Modern Physics… | NUST Entrance Test

According to special theory of relativity, mass and energy are:

Difficulty: Easy

A:

Different entities

B:

Related as $E=mc^{2}$

C:

Inter-convertible

D:

All

It implies from $\triangle m=\frac{\triangle E}{c^{2}}$ that to get even a small increase in mass of an object, we require:

Difficulty: Easy

A:

Small changes in energy

B:

Large changes in energy

C:

Very small changes in energy

D:

Any of these

By taking the relatively effects into account, the location and speed anywhere on Earth can be determined to an accuracy of about:

Difficulty: Easy

A:

2 ms^{-1}

B:

20 cms^{-1}

C:

2 cms^{-1}

D:

20 ms^{-1}

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