Category: Past Papers MCQs

No.	Topics.	No.	Topics.
1.	Biology mcqs	2.	Chemistry mcqs
3.	General Knowledge mcqs	4.	Pak Studies
5.	Physics mcqs

A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successiv resonances are produced at 20 cm and 73 cm column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27°C is :-

330 m/s
339 m/s
350 m/s
300 m/s

A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be____________

–10 cm
–15 cm
–20 cm
–30 cm

When the conductivity of a semiconductor is only due to breaking of covalent bonds, the semiconductor is called_____

an n-type semiconductor
ap-type semiconductor
an intrinsic semiconductor
an extrinsic semiconductor

What will be the ratio of electric field at a point on the axis and an equidistant point on the equatorial line of a dipole________

1:02
2 : 1
4 : 1
1:04

Two wires have the same material and length, but their masses are in the ration of 4 : If they are stretched by the same force, their elongations will be in the ratio of___________

2:03
3:04
4:03
9:16

Three objects coloured black, gray and white can withstand hostile conditions upto 2800°These objects are thrown into a furnace where each of them attains a temperature of 2000°Which object will gloss brightest ____________

The white object
The black object
All glow with equal brightness
Gray object

The bob of a simple pendulum is a hollow sphere, filled with mercury. If 5% mercury is removed from the sphere then the periodic time of the simple pendulum_______

will decrease
will increase
will not change
may increase or decrease

Choose the wrong statement from the following.

The motion of an object along a straight line is a rectilinear motion
The speed in general is less than the magnitude of the velocity
The slope of the displacement-time graph gives the velocity of the body
The area under the velocity-time graph gives the displacement of the body

A packet contains silver powder of mass 23 g ± 0.01 g. Some of the powder of mass 75 g ± 0.01 g is taken out from it. The mass of the powder left back is________

14.48 g ± 0.00 g
14.48 ± 0.02 g
14.5 g ± 0.1 g
14.5 g ± 0.2 g

Magnetic Field inside a solenoid is ________

increases from one end to another
uniform
varies from point to point
None of the above

If x denotes displacement in time t and x = a cost,then acceleration is_________

a cos t
– a cos t
a sin t
–a sin t

If the angular velocity of a body rotating about an axis is doubled and its moment of inertia halved,the rotational kinetic energy will changed by a factor of____________

4
2
1
1/2

A convex mirror has a radius of curvature of 22 cm. If an object is placed 14 cm away from the mirror then its image is formed at____________

6.2 cm on the front side of the mirror
6.2 cm on the back side of the mirror.
51.3 cm on the front of the mirror.
51.3 cm on the back side of the mirror.

Top Contributors

Zabeehullah
14961 Points
Ukrashenye_hpen
0 Points

All Categories

Quantitative Reasoning (Maths)

No categories

Verbal Reasoning (English)

No categories

Past Papers

Practice Papers

No categories

We are working on different job tests and university entry exams. Soon you will be able to find specific results for your searches.

Site Pages.

Top Categories.

Site Links.

© 2023 www.mcqscareer.com

error: Content is protected !!