Q1 of 46 Page 247

Fill in the blanks.

If liquid hydrogen is for rocket, then _________ is for MRI.

Liquid helium. Maintaining a large magnetic field required in an MRI machine requires superconductivity which is achieved by cooling the wires to very low temperatures to reduce the resistance to almost zero. This cooling is done using a continuous supply of liquid He.


More from this chapter

All 46 →
14

List out the names of the organisations which are not associated with Chandrayaan-I

mission from the following: i) ISRO ii) BARC iii) NASA iv) ESA v) WHO vi) ONGC

 1

Fill in the blanks.

If force = mass x acceleration, then momentum = __________.

 2

Correct the mistakes, if any, in the following statements.

i) One newton is the force that produces an acceleration of 1 ms-2 in an object of 1 gram mass.


ii) Action and reaction always act on the same body.

 3

The important use of cryogenics is cryogenic fuels. What do you mean by cryogenic fuels?