Identify the correct statement for a N x N matrix consisting of all ones,

• all eigenvalues = 1

• all eigenvalues = 0

• the eigenvalues are 1, 2, …., N

• one eigenvalue = N, the others = 0

The binding energy of the hydrogen atom (electron bound to proton)in its ground state is -13.6 eV. The  binding energy of positronium (electron bound to positron) is

Which one among the following denotes the lowest temperature?

•  1K

• 1°Re

•  1°F

• 1°C

Which one of the following is diamagnetic?

• Aluminium

• Bismuth

• Iron

• Caesium

The trace and determinant of a 2x2 matrix is 6 and 8 respectively. Its Eigen values are

• 3 and 3

• 3 and -3

• 2 and 4

• -2 and -3

The eye defect that is corrected using a bifocal lens is?

• Astigmatism

• Hyperopia

• Myopia

• Presbyopia

A buck converter is used to

• step-up the voltage

• Exactly double the voltage

• Step- down the voltage

• Stabilize the voltage

The Peak Inverse Voltage(PIV) of a full wave rectifier with capacitor input filter equals the

• primary peak voltage

• secondary peak voltage

• primary peak to peak voltage

• secondary peak to peak voltage

Identify the atom that can be doped with silicon to make it n-type Semiconductor

• Aluminium

• Boron

• Gallium

• Phosphorous