# PPSC Lecturer of Physics Online Test 49 Solved MCQs

Online Free Taleem is free online MCQ’s test related to Lecturer Physics. All the individuals who are going to appear in Lecturer Physics written test can attempt these tests in order to prepare for it in best possible way. Our tests of Lecturer of Physics include all the important questions and Past Paper of  Lecturer Physics, that have extremely high amount of chances for been included in the actual exam which make our test undoubtedly the best source of preparation.

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There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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 Test Instructions:- Test Name Lecturer Physics Subject Physics Test 49 Test Type MCQs Total Questions 25 Total Time 20 Minutes Total Marks 100
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You have 20 minutes to pass to the quiz.

PPSC LECTURER OF PHYSICS TEST NO. 49

1 / 25

A sled is on an icy (frictionless) slope that is 30◦ above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0m/s2, down the incline. The mass of the sled is:

2 / 25

A crane operator lowers a 16, 000-N steel ball with a downward acceleration of 3m/s2. The tension force of the cable is:

3 / 25

A 5-kg concrete block is lowered with a downward acceleration of 2.8m/s2 by means of a rope. The force of the block on the rope is:

4 / 25

Two forces are applied to a 5.0-kg crate; one is 6.0N to the north and the other is 8.0N to the west. The magnitude of the acceleration of the crate is:

5 / 25

When a 25-kg crate is pushed across a frictionless horizontal floor with a force of 200 N, directed 20◦ below the horizontal, the magnitude of the normal force of the floor on the crate is:

6 / 25

A 5-kg concrete block is lowered with a downward acceleration of 2.8m/s2 by means of a rope. The force of the block on Earth is:

7 / 25

A heavy steel ball B is suspended by a cord from a block of wood W. The entire system is dropped through the air. Neglecting air resistance, the tension in the cord is:

8 / 25

A 25-N crate is held at rest on a frictionless incline by a force that is parallel to the incline. If the incline is 25◦ above the horizontal the magnitude of the applied force is:

9 / 25

You stand on a spring scale on the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

10 / 25

You stand on a spring scale on the floor of an elevator. Of the following, the scale shows the highest reading when the elevator:

11 / 25

A 90-kg man stands in an elevator that has a downward acceleration of 1.4m/s2. The force exerted by him on the floor is about:

12 / 25

The “reaction” force does not cancel the “action” force because:

13 / 25

A 1000-kg elevator is rising and its speed is increasing at 3m/s2. The tension force of the cable on the elevator is:

14 / 25

A 32-N force, parallel to the incline, is required to push a certain crate at constant velocity up a frictionless incline that is 30◦ above the horizontal. The mass of the crate is:

15 / 25

A block slides down a frictionless plane that makes an angle of 30◦ with the horizontal. The acceleration of the block is:

16 / 25

When a 40-N force, parallel to the incline and directed up the incline, is applied to a crate on a frictionless incline that is 30◦ above the horizontal, the acceleration of the crate is 2.0m/s2, up the incline. The mass of the crate is:

17 / 25

A 5-kg block is suspended by a rope from the ceiling of an elevator as the elevator accelerates downward at 3.0m/s2. The tension force of the rope on the block is:

18 / 25

A 400-N steel ball is suspended by a light rope from the ceiling. The tension in the rope is:

19 / 25

A 25-N crate is held at rest on a frictionless incline by a force that is parallel to the incline. If the incline is 25◦ above the horizontal the magnitude of the normal force of the incline on the crate is:

20 / 25

A book rests on a table, exerting a downward force on the table. The reaction to this force is:

21 / 25

A lead block is suspended from your hand by a string. The reaction to the force of gravity on the block is the force exerted by:

22 / 25

A 25-N crate slides down a frictionless incline that is 25◦ above the horizontal. The magnitude of the normal force of the incline on the crate is:

23 / 25

A car moves horizontally with a constant acceleration of 3m/s2. A ball is suspended by a string from the ceiling of the car. The ball does not swing, being at rest with respect to the car. What angle does the string make with the vertical?

24 / 25

A 90-kg man stands in an elevator that is moving up at a constant speed of 5.0m/s. The force exerted by him on the floor is about:

25 / 25

A man weighing 700 Nb is in an elevator that is accelerating upward at 4m/s2. The force exerted on him by the elevator floor is: