Find out other modes of infection by which a pathogen spreads from person to person.

Which antigen is present in the Rh^+ ve person?

Write down the causative pathogen, mode of infection and preventive measures of AIDS.

A person stands in contact against a wall of cylindrical drum of radius 'r' rotating with angular velocity omega .If mu is coefficient of static fiction between the wall and the person , then the minium rotational speed which enables the person to remain stuck to the wall will be

Note the changes taking palce in the internal environment of the body, when a person goes from resting state into a state of physical activity.

Fifteen persons sit around a table. Find the number of arrangments that have two specified persons not sitting side by side.

Three prizes are to be distributed among six persons. The number of ways in which this can be done, if no person gets all the prizes is

A person walks from point P to point Q along a straight road in 10 minutes, then turns back and returns to point R which is midway between P and Q after further 4 minutes. If PQ is 1 km, find the average speed and velocity of the person in going from P to R.

There are 10 persons among whom two are brothers. The total number of ways in which these persons can be seated around a round table so that exactly one person sits between the btothers, is equal to:

How will the value of 'g' change if a person travels from Delhi to Moscow ?