#### My Profile

1. Inform you about time table of exam.

2. Inform you about new question papers.

3. New video tutorials information.

#### Question

A famous relation in physics relates ‘moving mass’ *m *to the ‘rest mass’ *m*_{0} of a particle in terms of its speed *v *and the speed of light, *c*. (This relation first arose as a consequence of special relativity due to Albert Einstein). A boy recalls the relation almost correctly but forgets where to put the constant c. He writes:

`m = m_0/(1-v^2)^(1/2)`

Guess where to put the missing c.

#### Solution

#### Similar questions VIEW ALL

Fill in the blanks by suitable conversion of units:

G= 6.67 × 10^{–11} N m^{2} (kg)^{–2}=.... (cm)^{3}s^{–2} g^{–1}.

Fill in the blanks

The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ... (mm)^{2}

Fill in the blanks by suitable conversion of units:

3.0 m s^{–2}=.... km h^{–2}

Explain this statement clearly:

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary:

(a) atoms are very small objects

(b) a jet plane moves with great speed

(c) the mass of Jupiter is very large

(d) the air inside this room contains a large number of molecules

(e) a proton is much more massive than an electron

(f) the speed of sound is much smaller than the speed of light.

Fill in the blanks

The volume of a cube of side 1 cm is equal to.....m^{3}