Lecturer Physics Test 13 Online Preparation MCQs Past Papers |

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Note:-

There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
Practice this test at least 5 times if you want to secure High Marks.
At the End of the Test you can see your Test score and Rating.
If you found any incorrect answer in Quiz. Simply click on the quiz title and comment below on that MCQ. So that I can update the incorrect answer on time.

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Test Instructions:-
Test Name	Lecturer Physics
Subject	Physics Test 13
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPSC Lecturer of Physics Practice Test 13

1 / 25

The action and reaction forces referred in Newton’s third law of motion:

need not to be equal in magnitude but must have the same line of action

must act upon the same body

must be equal in magnitude but need not have the same line of action

must act upon different bodies

2 / 25

The resultant magnitude of two vectors:

is always positive

is usually zero

can be negative, positive or zero

can never be zero

3 / 25

If P = 2i + 3j − k and Q = 4i + 6j − 2j, then the angle between P and Q will be:

60°

75°

0°

45°

4 / 25

The dimensional formula for torque is identical to:

pressure energy

kinetic energy

momentum of force

all of the above

5 / 25

Poynting vector is closely related to:

power

intensity of filed

none

energy density

6 / 25

What is the rates of 1 nanometer to 1 attometer?

(a) 10⁶

(b) 10⁷
(c) 10⁸

(d) 10⁹

7 / 25

A carpet can be cleaned by beating. This is in accordance with Newton’s:

first law

none of the above

third law

second law

8 / 25

What acceleration will a force of 5N produce in a mass of 5 kg?

(a) 1 m/s²
(b) 25 m/s²
(c) 1 m/s
(d) 25 m/s

9 / 25

Which of the following units is different from others?

kilo-watt-hour

volt

watt-sec

electron-volt

10 / 25

When a body accelerates:

its velocity always changes

its direction always changes

its mass always

it falls towards the earth

11 / 25

A force of 100 N acts on a body of 5 kg for 10 seconds. What will be the velocity of the body?

2000 m/s

200 m/s

2 m/s

20 m/s

12 / 25

A fielder caught a ball of 150 gm moving at a rate of 20 m/s. If the catching process was completed in 0.1 sec, the force of the blow exerted by ball on the hands was:

30,000 N

300 N

30,000 N

30 N

13 / 25

Initial velocity of a body moving with uniform acceleration of 5 m/s2, is 10 m/s. What will be the distance covered in 10 sec?

350 m

150 m

250 m

450 m

14 / 25

A plane flying 500 MPH due north has a tail wind of 45 MPH. The resultant velocity is:

545 mph due south

545 mph due north

455 mph due north

455 mph due south

15 / 25

A man walks 3 miles north and then walks 4 miles east. The resultant displacement is:

1 mile NE

7 miles NE

5 miles NE

5 miles SE

16 / 25

If F = 8i − 2j and r = 6i + 8k, then F. r will be:

48 units

6 units

32 units

8 units

17 / 25

When a particle is thrown up, it will have:

different speed at the same height during ascent and during descent

same speed at the same heights during ascent and during descent

same speed at different heights during ascent and during descent

different speed at different height during ascent and during descent

18 / 25

Newton’s first law of motion supplies the definition of:

distance

acceleration

velocity

force

19 / 25

Which vector gives the displacement from one point to another in space?

distance vector

none of the above

unit vector

position vector

20 / 25

Which of the following is a scalar quantity?

work

power

all of the above

energy

21 / 25

A man pushes against the wall with 50 N of force. The wall does not move. The resultant force is:

50 N

75 N

100 N

0 N

22 / 25

Which law of motion explains the phenomenon of swimming?

none of these

first

second

third

23 / 25

Choose the only scalar?

angular momentum

torque

kinetic energy

momentum

24 / 25

If a person can thrown ball to a minimum height h (vertically up) then the maximum distance up to which he can throw the ball is:

25 / 25

Which of the following is not true?

speed is a scalar

velocity can be negative

velocity is a vector

speed can be negative

Your score is

The average score is 52%

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