निम्नलिखित रिक्त

A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments –

A rod of length 2 m expands by 2 mm when heated. If coefficient of linear expansion is 1 x 10-5 / 0C, find temperature change.

Food cans are coated with tin and not with zinc because

If ice floating on water in a vessel melts, the water level in the vessel     .

An element "X", having atomic number 16. gains two electrons to form an anion X. What will be the atomic

number of 'X' in the anion?

The pressure inside a soap bubble is 3 Pa more than atmospheric pressure. Surface tension is 0.03 N/m. Find radius.

Speed of sound in air is unaffected by change in :

The pH of blood is primarily regulated by:

A bomb at rest explodes into two pieces of unequal masses. Which of the following is necessarily true about the motion of the fragments?

The sharpness of a television image is termed as its –