BAF Shaheen College Dhaka Practice Pre-test Examination 2020
Class-Ten (English Version) Subject: Physics (MCQ)
Subject Code: 0136
Time: 25 Min Full marks-25
1. What will happen to the gap of the Gold Leaves of an Electroscope when a negatively charged object touches its metal disc and the leaves are positively charged?
a) Decrease b) increase c) remain same d) increase and decrease 2. What is the charge of an electron?
a) 1.6 X 10-19 N b) 1.6 X 10-19 C c) - 1.6 X 10-19 C d) 1.6 X 10-19 Cm-2 3. The distance between two charges +1C and -1C is 10 cm. What is the force between them?
a) -7.5 X 109N ) -9 X 1010N c) -6 X 1015N d)-9 X 1011N 4. If a +1C of charge is placed between +30C and +12C at which position there wiil be neutral point?
a) Near big charge b) near small charge c) at mid point d) beyond small charge 5. A force of 2000N acts on a body of mass 20kg for a time of 0.1seconds.What is the change of momentum of the body?
a) 200 kgms-1 b) 2500 kgms-1 c) 1500 kgms-1 d)2130kgms-1
6. A bullet of mass 10gm was shot from a gun with the velocity of 500ms-1.If the mass of the gun is 2kg then what is the backward velocity of the gun?
a) 2.5 ms-1 b)-2.5 ms-1 c) -3.5 ms-1 d) 4.71ms-1 7. A body of mass 1.5 kg was projected in the vertically upward direction with the velocity of 30 30ms-1. How much distance it will travel in 2 seconds?
a)23.97m b) 52.5m c) 40.7m d) 45.9m
8.Which one of the following is a thermometric property?
a)Volume b)length c)area d)shape
9.What is the unit of specific heat?
a) JKgK-1 b)JKg-1K c)JK-1 d)JKg-1K-1
10.The temperature of human being of sound health is 98.40C. What is its value in Celsius Scale?
a) 410 C b) 36.890C c) 350C d) 340C 11. Who was the Pioneer of Experimental Physics?
a) Kepler b) Galileo c) Romer d) Roger Bacon
12. 1 Femto meter= ----Meter?
a) 10-12m b) 10-9m c) 10-15 m d) 10-18m
13. A body of mass 10kg was moving with the velocity of 2ms-1.After applying force an acceleration of 2 ms-2 was produced.After 2 seconds what will be the change of momentum?
a) 0 kgms-1 b) 20 kgms-1 c)40 kgms-1 d) 60kgms-1 14.Which one is the part of mechanical energy?
a) chemical energy b) K.E. c) electrical d)magnetic energy 15. A boy of mass 40kg crosses the height of 6 m in 12 seconds. What is his power?
a) 20 w b) 32 w c) 119 w d) 2352 w 16. What is the unit of potential energy?
a) watt b) joule c) kgm d) coulomb 17. 600 Mev = ? Joule
a) 5.6 j b) 5.6X 106 j c) 7 X 106 j d) None 18. 1 HP= how much watt
a) 744w b) 252 w c) 746 w d) 1971w 19. Plasma state-
i) Fourth state of matter
ii) particles carry electric charge
iii) particles have no definite shape and volume Which one is correct?
a) I & ii b) I & iii c) ii & iii d) I, ii, iii 20. What is the unit of Refractive Index?
a) degree b) radian c) per degree d) no unit
21. The Refractive Index of water with respect to air is 1.44. What is the Refractive Index of air with respect to water?
a) 0.75 b) 0.69 c) 1.44 d) 0.70 22. What is called the small opening at the middle of the Iris?
a)Eyeball b) choroid c) pupil d) cornea 23. Which wire is used in the electric heater?
a) Copper b) nichrome c) silver d) boron 24. Which one of the following is a conductor?
a)plastic b) human body c) wood d) paper 25. Which one is used to test stomach?
a) CT scan b) ECG c) Endoscopy d) MRI
