#### 12th Standard Physics English Medium Free Online Test Creative One Mark questions with Answer Key - Part Two

12th Standard

Reg.No. :
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Physics

Time : 00:10:00 Hrs
Total Marks : 10
10 x 1 = 10
1. The concept of 'Field' was introduced by

(a)

(b)

Gauss

(c)

Maxwell

(d)

None

2. A condenser is charged to a potential of 200V and has a charge of 0.1C. The energy stored in it is

(a)

1 J

(b)

2 J

(c)

10 J

(d)

20 J

3. If the specific resistance of a potentiometer wire is 10-7 Om and current flowing through it . is 0.1 amp, cross - sectional area of wire is 10-6 m2, then potential gradient will be

(a)

10-2 v/m

(b)

10-4 v/m

(c)

10-6 v/m

(d)

10-8v/m

4. Which of the following is an identical.

(a)

germanium, silicon

(b)

silver, wood

(c)

aluminum, constantan

(d)

bakelite, iron

5. The resistance of the wire varies inversely as

(a)

area of cross section

(b)

resistivity

(c)

length

(d)

temperature

6. The most suitable metal for permanent magnet is

(a)

copper

(b)

aluminium

(c)

steel

(d)

iron

7. The expression for water equivalent is

(a)

W=H(θ21)

(b)

W=$\frac { { \theta }_{ 2 }-{ \theta }_{ 1 } }{ H }$

(c)

both (a) and (b)

(d)

W=$\frac { H }{ { \theta }_{ 2 }-{ \theta }_{ 1 } }$

8. The direction of magnetic dipole moment is ______

(a)

from South pole to North pole

(b)

from North to South pole

(c)

from East to West

(d)

from West to East

9. Which current- time graph represents the steady movement of short magnet through a coil XY?

(a)

(b)

(c)

(d)

10. If the frequency of light in a photoelectron experiment is doubled the stopping potential will

(a)

be doubled

(b)

be halved

(c)

become more than double

(d)

become less than double.