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 boy is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 2

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Question # 3

A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if

Question # 4

Boyle's law is applicable in

Question # 5

According to Stoke's law, drag force depends on

Question # 6

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

Question # 7

If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be

Question # 8

The length of a telescope is 36 cm. The focal lengths of its lenses can be

Question # 9

One cannot see fog because

Question # 10

The conductivity of a superconductor is

Question # 11

Light appears to travel in straight lines since

Question # 12

The velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is:

Question # 13

The contrast in the fringes in any interference pattern depends on

Question # 14

Steel is preferred for making springs over copper. Why?

Question # 15

The motion without consideration of its cause is studied in

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 When a hydrogen atom is bombarded, the atom is excited to the n = 4 state of hydrogen atom. The energy released when the atom falls from n = 4 state to the ground state is
A. 1.275 eV
B. 12.75 eV
C. 5 eV
D. 8 eV
2 The half-life of a radio-isotope is 5 years. The fraction of atoms decayed in this substance after 15 years will be
A. 1
B. 3/4
C. 7/8
D. 5/8
3 One cannot see fog because
A. Fog absorbs light
B. The refractive index of fog is infinity
C. Light suffers total reflection at the droplet in a fog
D. Light is scattered by the droplet in fog
4 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
5 Ultra-violet radiation of 6.2 eV falls on an aluminium surface. K.E. of fastest electron emitted is (Work function = 4.2 eV)
A. 3.2 x 10-21 J
B. 3.2 x 10-19 J
C. 7 x 10-25 J
D. 9 x 10-32 J
6 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
7 Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is
A. R/4
B. R/3
C. R/2
D. R
8 If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be
A. 0.1 watt
B. 1 watt
C. 10 watt
D. 100 watt
9 How much water a pump of 2kW can raise in one minute to a height of 10 m, take g = 10 m/s2?
A. 1000 liters
B. 1200 liters
C. 100 liters
D. 2000 liters
10 When the length of a microscope tube increase, its magnifying power
A. Decreases
B. Increases
C. Does not Change
D. May increase or decrease depending on the observer and the place of observation

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