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

A prism splits a beam of white light into its seven constituent colors. This is so because

Question # 2

Band spectrum is produced by

Question # 3

In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie

Question # 4

With the increase of temperature viscosity

Question # 5

When the length of a microscope tube increase, its magnifying power

Question # 6

For production of beats the two sources must have

Question # 7

One cannot see fog because

Question # 8

A fly is sitting on the objective of a telescope pointed towards the moon.
What effect is expected on the photography of the moon taken through the telescope?

Question # 9

Two electric bulbs of 200 W and 100 W have same voltage. If R1and R2be their resistance respectively then

Question # 10

Which of the following is a scalar quantity?

Question # 11

A particle moving in a magnetic field has increase in its velocity, then its radius of the circle

Question # 12

A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentum

Question # 13

What remains constant in the field of central force?

Question # 14

The nuclear model of atom was proposed by

Question # 15

Choose the correct statement

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The twinkling of stars is due to
A. The fact that stars do not emit light continuously
B. The refractive index of the earth's atmosphere fluctuate
C. Intermittent absorption of star light by its own atmosphere
D. None of these
2 The henry is the unit for
A. Resistance
B. Magnetic flux
C. Magnetic field
D. Inductance
3 If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be
A. 1 s
B. 2 s
C. 3 s
D. 4 s
4 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
5 For obtaining appreciable extension, the wire should be
A. Short and thin
B. Long and thin
C. Short and thick
D. Long and thick
6 Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is
A. Zero
B. 5N
C. 25N
D. 150N
7 A particle is moving in a uniform magnetic filed, then
A. its momentum changes but total energy remains the same
B. Both momentum and total energy remains the same
C. Both changes
D. Total energy change but momentum remains
8 Quantity that remains unchanged in a transformer is
A. Voltage
B. Current
C. Frequency
D. None of these
9 The mass of a proton is 1847 times that of an electron. An electron and a proton are projected into a uniform electric field in a direction at right angles to the direction of the field with the same initial kinetic energy.The
A. Both the trajectories will be equally curved
B. The proton trajectory will be less curved than the electron trajectory
C. The electron trajectory will be less curved than the proton trajectory
D. The relative curving of the trajectories will be dependent on the value of the initial kinetic energy
10 To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined
A. Parallel
B. Antiparallel
C. At angle 60°
D. Perpendicular to each other

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