While undergoing beta decay, the half-life of tritium is 12.5 years. After 25 years, what fraction of a sample of pure tritium will be decayed?

A satellite with 10 kg weight is circling around the earth once every 2 hours. The radius of the orbit is 9000 km. What is the quantum number of the orbit of the satellite. assuming that Bohr's angular momentum postulate applies to the satellites?

How much time is required by the sun for taking a shift by 1° when viewed from the earth, if it is given that the earth takes 24 hours to rotate once about its axis?

In Newton's rings experiment, if the diameter of a certain order of a dark ring is four times that of the second ring, then what is the order of the ring?

Which of the following options could be the lowest temperature of mesosphere?

Which of the following options is the correct critical angle of a diamond?

Machine data makes up for more than ___% of the data accumulated by organizations.

According to the authors, judgments of faith __________.

A step-up transformer _____ the voltage and _____ the current.

A magnifying glass widens the angle through which _________.

Accidentally breathing foreign particles into the lungs is called _______.