Physics Past Questions and Answers

Which of the following are the essential parts of an atomic bomb?

A Uranium and neutrons
B Radium and polonium
C Nitrogen and neutrons
D Ranium and Î± - particles.

Question 2892:

Which of the following is not a safety precaution in a nuclear station?

A Radioactive materials are stored in glass casings
B Radioactive materials are handled with remote-controlled tongs
C Technicians in nuclear stations wear radio-sensitive badges which are checked regularly.
D Radioactive materials are kept in thick-walled lead containers

Question 2893:

Explain plane polarisation of light

Question 2894:

A stone is projected horizontally from the top of a tower with a speed of 5ms-1. It lands on the ground level at a horizontal distance of 20m from the foot of the tower. Calculate the height of the tower. (g = 10ms\(^{-2}\))

Question 2895:

In an electrolysis experiment, the ammeter records a steady current of 1A. The mass of copper deposited is 0.66g in 30 minutes. Calculate the error in the ammeter reading (Electrochemical equivalent of copper = 0.00033g C\(^{-1}\)).