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Physics Mcqs — Test 19

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Question 1
A completely filled band is called__________________?
Question 2
Which one has the greatest energy gap ?
Question 3
With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?
Question 4
On the basis of band theory of solids the semiconductors have _____________________?
Question 5
Very weak magnetic fields are detected by___________________?
Question 6
Energy needed to magnetize and demagnetize is represented by _________________?
Question 7
What is the SI unit of modulus of elasticity of substance ?
Question 8
A wire is stretched by a force F which causes an extension 1. The energy stored in the wire is____________________?
Question 9
Formation of large molecule by joining small molecules is_________________?
Question 10
The energy band occupied by the valence electrons is called___________________?