﻿ ISC Class 12 Physics Solved Question Paper 2014 | Previous Year Papers | Zigya

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## ISC Class 12 Physics Solved Question Paper 2014

#### Multiple Choice Questions

1.

Choose the correct alternative:

Intensity of electric field at a point at a perpendicular distance 'r' from an infinite line charge, having linear charge density  is given by,

• E =

• E =

• E =

921 Views

2.

If R1 and R2 are filament resistance of a 200 W and a 100 W bulb respectively, designed to operate on the same voltage.

• R1 = R2

• R2 = 2R1

• R= 4R1

• R= 4R1

309 Views

3.

A metallic wire having length of 2 m and weight of 4 x 10-3 N is found to remain at rest in a uniform and transverse magnetic field of 2 x 10-4 T. Current flowing through the wire is:

• 10 A

• 5 A

• 2 A

• 2 A

352 Views

4.

When a beam of white light is passed through sodium vapours and then through a spectrometer, spectrum so obtained has two dark lines present in the yellow region. this spectrum is called:

• band spectrum

• continuous spectrum

• absorption spectrum of sodium

• absorption spectrum of sodium

162 Views

5.

If I3 and I2 represent angular momenta of an orbiting electron in III and II Bohr orbits respectively, then I3 : I2 is,

• 3:2

• 9:4

• 2:3

• 2:3

181 Views

6.

A parallel plate capacitor has a capacitance of 5 . It becomes 50  when a dielectric medium occupies the entire space between its two plates. What is the dielectric constant of the medium?

497 Views

7.

Find the EMF of the battery as shown in the figure below:

377 Views

8.

Two substances A and B have their relative permeabilities slightly greater and slightly less than 1 respectively.

What do you conclude about A and B as far as their magnetic materials are concerned ?

401 Views

9.

When does a moved charged particle not experience force while moving through a uniform magnetic field.

310 Views

10.

What is the turns ratio i.e., transformer ratio, ns : np in an ideal transformer which increases AC voltage from 220 V to 33000 V?

240 Views