PHY101 Midterm Solved MCQs by Junaid

Q1. The ultimate strength of a sample is the stress at which the sample:

1. Return to its original shape when the stress is removed
2. Remains underwater
3. Breaks
4. Bends 180?

Q2. The value of k in coulombs law depends upon

1. Medium between two charges
2. Distance between charges
3. Magnitudes od charges
4. All of these

Q3. The law of inertia was firstly formulated by:

1. Aristotle
2. Galileo
3. Newton
4. Einstein

Q4. The ratio of circumference of a circle to its diameter is equal to;

1. 2 n
2. n
3. n/2
4. one steadier
5. A water bed that is 1.5 m wide and 2.5m long weighs 1055 N. Assuming

pressure the bed exerts on the floor?

1. 250 Pa ii. 260 Pa iii. 270 Pa iv. 280 Pa

Q6. The center of gravity is the average location of the ______of and object.

1. Mass
2. Weight
3. Static equilibrium
4. Dynamic

Q7. Acceleration in a body is always produced in the direction of:

1. Velocity
2. Weight
3. Force
4. Acceleration

Q8. As per Coulomb’s law, the force of attraction or repulsion between two points charges directly proportional to the.

1. Cube of the distance
2. Product of the magnitude of charges
3. Sum of the magnitude of charges
4. Square of the distance between them

Q9. One revolution is the same as:

1. 2n rad
2. n rad
3. 57 rad
4. 1 rad

Q10. A ______ vector is obtained by dividing the vector by its magnitude:

1. Unit
2. Position
3. Normal
4. Negative

Q11. are the speed of sound to be 340 m/s. A thunder clap is heard about 3 s after the lightning is seen. The source of both light and sound is:

1. moving overhead faster than the speed of sound
2. emitting a much higher frequency than is heard
3. emitting a much lower frequency than is heard
4. about 1000 m away E. much more than 1000 m away

Q12. If the distance between all pairs of particles of the body do not change by applying a force then the body is said to be.

1. Rigid
2. Large
3. Small
4. Flexible

Q13. For an ideal fluid following through a horizontal pipe, Bernoulli’s equation states that the sum of the pressure and energy per unit volume along the pipe des which of the following? (Assume measurement are taken along the pipe in the direction of fluid flow.)

1. Increases as the pipe diameter increases
2. Decreases as the pipe diameter increases
3. Remains constant as the pipe diameter increases
4. Increases, then decreases as the pipe diameter increases

Q14. Which of the following statement is true?

1. Weight is a force, mass is a measure of inertia
2. Mass depends on gravity, weight does not
3. Gravity is necessary to measure both weight and mass
4. Heaver objects weight more than light objects

Q15. A/an ________ is the basic reason to change in the motion of an object according to Newton’s second law of motion

1. Net force
2. Decrease in inertia
3. Change in velocity