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Category: Past Papers MCQs

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1.	Biology mcqs	2.	Chemistry mcqs
3.	General Knowledge mcqs	4.	Pak Studies
5.	Physics mcqs

An astronomical telescope has focal lengths 100 & 10cm of objective and eyepiece lens respectively when final image is formed at least distance of distinct vision, magnification power of telescope will be_________

–10
–11
–14
–15

A body starting from rest is moving under a constant acceleration up to 20 seIf it moves S1 distance in first 10 sec., and S2 distance in next 10 sethen S2 will be equal to_________

S¹
2S¹
3S¹
4S¹

A 0 hp motor pumps out water from a well of depth 20 m and fills a water tank of volume 2238 liters at a height of 10 m from the groun The running time of the motor to fill the empty water tank is (g = 10m/s² .

5 minutes
10 minutes
15 minutes
20 minutes

What happens, when the width of the slit aperture is increased in an experiment of single slit diffraction experiment

spread of diffraction region is increased
spread of diffraction region is decreased
spread of diffraction region will be decreased and mid-band becomes narrow
none of the above

The excess pressure inside a soap bubble A is twice that in another soap bubble The ratio of volumes of A and B is_______________

1 : 2
1:04
1 : 8
1:16

Some of the leaves may get detached from a tree if we vigorously shake its branch because of___________

conservation of energy
newton’s II law of motion
newton’s I law of motion
newton’s III law of motion

In logic gates the bar sing, indicates_____

OR operation
AND operation
NOT operation
a universal gate

In a mass spectrograph, mass number and charge of ion A are 24 and +2e respectively. Mass number and charge of ion B are 22 and +e. If both ions have same speed and the radius of path traced by ion A is 24 cm then radius of path traced by ion B will be___________

55 cm
11 cm
44 cm
24 cm

In a capillary tube experiment, a vertical 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action.If this experiment is conducted in a freely falling elevator, the length of the water column becomes__________________

10 cm
20 cm
30 cm
Zero

Greenhouse effect keeps the earth surface _______

cold at night
dusty and cold
warm at night
moist

A lift is moving down with acceleration A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively_____

g -a, g+a
g.g
g- g
a and g

The process of changing some characteristics eional of is called a carrier wave in accordance with the incoming signal is called_____

Amplification
Rectification
Modulation
Demodulation

The period of an earth satellite is 5 h. If the distance between the earth and the satellite is increased to 4 times its original value, then the new period of the satellite will be_____

20 h
30 h
40 h
80 h

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