Physics Test 29

Result

Physics Test 29

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The binding energies of the atoms of elements X and Y are E_x and E_y respectively. Three atoms of the element Y fuse to give one atom element X. This fusion process is accompained by release of energy U. Then E_x, E_yand U are related as :-

A
E_x= 3E_y

B
E_x= 3E_y + U

C
E_x = 3E_y – U

D
E_x + 3E_y + U = 0

Solution

3Y → X U = E_x - 3E_y
Question 2
4 / -1

In an electromagnetic wave the average energy density associated with magnetic field will be :-

A
1 /2 LI²

B
B² / 2μ₀

C
1/2 μ₀B²

D
1μ₀/ 2B²

Solution

U_B= B² / 2μ₀
Question 3
4 / -1

In a semiconductor crystal, if current flows due to breakage of crystal bonds, then the semiconductor is called :-

A
acceptor

B
donor

C
intrinsic semiconductor

D
extrinsic semiconductor

Solution

Pure semiconductor