Physics – Class 12 Mock Test 5

10%

Question 1 of 10

1. How many quantities are required to specify the magnetic field of the earth?

Question 1 of 10

Question 2 of 10

2. Find the true statement.

The direction of deflection of the pointer does not depend upon the direction of motion of the secondary coil towards or away from the primary coil in the second experiment

When the south-pole of the bar magnet is moved towards or away from the coil, the deflections in the galvanometer are same to that observed with the north-pole for similar movements

The relative motion between the coils was not compulsory for the current in the primary to be generated

There is a difference in effect when the bar magnet is kept stationary and the coil is in motion

Question 2 of 10

Question 3 of 10

3. Which of the following is a natural magnet?

Magnetite

Bar magnet

Horseshoe magnet

Magnetic needle

Question 3 of 10

Question 4 of 10

4. Pick out the expression for galvanometer constant from the following?

\(\frac {1}{G} \, = \, \frac {k}{NAB}\)

G = \(\frac {k}{NAB}\)

G = k × NAB

G = \(\frac {NAB}{k}\)

Question 4 of 10

Question 5 of 10

5. Which of the following is another term for magnetization?

Magnetic moment

Magnetic polarization

Magnetic power

Magnetic neutrality

Question 5 of 10

Question 6 of 10

6. Pick out the temperature at which iron becomes paramagnetic?

700 °C

500 °C

600 °C

800 °C

Question 6 of 10

Question 7 of 10

7. Which among the following is true about Faraday’s law of Induction?

An emf is induced in a conductor when it moves parallel to the magnetic field

An emf is induced in a conductor when it cuts the magnetic flux

An emf is induced in a conductor when it is just entering a magnetic field

An emf is induced in a conductor when it moves perpendicular to the magnetic field

Question 7 of 10

Question 8 of 10

8. In the second experiment, Faraday replaced ‘X’ with ‘Y’ for checking the deflection in the galvanometer. Identify X and Y.

X ➔ Current carrying coil; Y ➔ Bar magnet

X ➔ Bar magnet; Y ➔ Battery

X ➔ Current carrying coil; Y ➔ Battery

X ➔ Bar magnet; Y ➔ Current carrying coil

Question 8 of 10

Question 9 of 10

9. Induced emf and motional emf are exactly the same.

False

True

Question 9 of 10

Question 10 of 10

10. Which of the following is not a basic property of magnets.

Directive property

Magnet exists as a monopole

Like poles repel and unlike poles attract

Attractive property

Question 10 of 10