Sample Test Physics
1
A proton was fired towards a positively charged plate located at a distance
x.
As the proton reaches just close to the plate, it stops there. The surface
charge density of the plate is 4 x 10-6 C/m 2
If the proton was fired with the
initial kinetic energy of 85 eV, then what is the value of distance x?
2 When a paramagnetic substance is placed in a uniform magnetic field, the magnetic field lines
3 In a single slit diffraction, first minima for red light of wavelength 699 nm coincide with
the first maxima of a colour.
What is the wavelength of the unknown colour?
4 What would be the possible number of elements if elements with principal quantum numbers 2 greater than 4 did not exist in nature?
5 Which of the following statements is incorrect with reference to the nuclear forces?
6 The expression q1 + q2 = 0 signifies that
7 When we rub a glass rod with silk, then
8 A material in which electrons are tightly bound and cannot move freely at room temperature is called a/an
9 Two stones of different masses are thrown vertically upward with same initial velocity. Which one will rise to a greater height?
10