NAT IIP Physical Science Physics Preparation Online Test for Pakistani Students

MCQ's Test For NAT II Physical Science Physics

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NAT II Physical Science Physics

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Question # 1

At 0°K which of the following properties of a gas will be zero?

Question # 2

Planck's constant has the dimensions of:

Question # 3

In Young's experiment, two coherent sources are placed 0.90 mm apart and the fringes are observed one metre away. If its produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be

Question # 4

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 5

Who explained the origin of the Fraunhoffer lines?

Question # 6

Copper and germanium are cooled to 70K from room temperature, then

Question # 7

Centre of mass is a point

Question # 8

Surface tension of water is due to

Question # 9

The nucleus 6C12 absorbs an energetic neutron and emits a beta particle (β). The resulting nucleus is

Question # 10

The smooth or steady stream-line flow is know as

Question # 11

All of the following statements are correct except

Question # 12

Ultra-violet radiation of 6.2 eV falls on an aluminium surface. K.E. of fastest electron emitted is (Work function = 4.2 eV)

Question # 13

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 14

A photoelectric cell coverts

Question # 15

A point charge Q is placed at the mid-point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if
A. The mass of the pendulum is increased
B. The mass of the pendulum is decreased
C. The length of the pendulum is increased
D. The length of the pendulum is decreased
2 In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is
A. 3.9
B. 4
C. 4.2
D. 6
3 Two forces are acting together on an object. The magnitude of their resultant is minimum when the angle between the force is
A. 0°
B. 60°
C. 120°
D. 180°
4 In a common base transistor circuit, the current gain is 0.98. On changing the emitter current by 5.00 mA, the change in collector current is
A. 0.916 mA
B. 2.45 mA
C. 4.9 mA
D. 5.1 mA
5 What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value, the mass remaining constant?
A. 12
B. 6
C. 3
D. 2
6 In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie
A. Ultraviolet
B. Infrared
C. Visible
D. X-ray
7 The volt/metre is the unit of:
A. Potential
B. Work
C. Force
D. Electric field intensity
8 A wire is stretched to double of its length. The strain is
A. 2
B. 1
C. zero
D. 0.5
9 As the electron in Bohr orbit of hydrogen atom passes from stat n = 2 to n = 1, the kinetic energy K and potential energy U change as
A. K two fold, U also two fold
B. K four fold, U also four fold
C. K four fold, U two fold
D. K two fold, U four fold
10 A particle moves along a circular path under the action of a force. The work done by the force is
A. Zero
B. Positive and non-zero
C. Negative and non zero
D. None of the above

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