ECAT Physics MCQs from Past Papers Chapter Wise with Key Unit#4

ECAT Physics MCQs from Past Papers (chapter-4)

This blog is all about ecat physics mcqs collected from past papers. All of these mcqs have been collected from past ecat entry test papers of UET TAXILA 2019-20. These ecat physics mcqs are chapter wise. Important mcqs from past papers are posted here.

ECAT PHYSICS CHAPTER 4 MCQS

ECAT Physics mcqs from past papers of session 2019-20 are given below. All these multiple choice questions are solved. Answer keys are given at the end of the post. Read all the mcqs carefully then concern yourself with the answer key for correction.

1.     The force which can do no work on the body on which it acts is (a) elastic force                 

(b) frictional force                 

(c) centripetal force          

(d) gravitational force

2.     kWm-2 is the unit of 
(a) power       (b) intensity                           

(c) energy      (d) energy per unit area

3.     The area under the curve of force-displacement graph represents
(a) force                   (b) displacement                    

(c) work                   (d) power

4.     If the direction of force is perpendicular to the direction of motion of body, then work done is

(a) minimum               (b) maximum                         

(c) zero                        (d) infinity

5.     Which of the following pair has same dimensions? (a) work and power           

(b) momentum and energy    

(c) power and pressure                             

(d) work and torque

6.     Work done is maximum when the angle between force and displacement is  

7.     If by some means, the diameter of earth increases to 4 times, the escape velocity will become/remain
(a) same           (b) double                              

(c) half             (d) one fourth

8.     A solar cell converts light energy into 
(a) heat energy            (b) chemical energy               

(c) electrical energy    (d) atomic energy

9. The escape velocity can be determined by the relation 

10.     Which one is renewable source of energy

(a) coal                      (b) natural gas                        

(c) sunlight                (d) uranium

11.     As we move up a body above the surface of Earth, the change in potential energy will always be
(a) negative            (b) positive                             

(c) zero                   (d) infinity

12.     1 kWh is equal to
(a) 0.36 MJ                       (b) 3.6 MJ                              

(c) 36 MJ                          (d) 360 MJ

13.     Commercial unit of electrical energy is 
(a) kilowatt          (b) kilowatt hour                    

(c) joule               (d) watt

Keys:

1. c 11. b

2. d 12. b

3. c 13. b

4. c 14. d

5. d 15. d

6. a 16. a

7. b 17. b

8. c 18. a

9. d 19. d

10. c 20. c

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