Today I am publishing tenth Physics First lesson ( Laws of Motion ) important one mark Questions ,, Please study well ,, apart from this also ,, GURU DEV Blesses you all to Get centum!! SREE VAIYANTHEE VIDHYALAYAA Mat. Hr. School ,SRRANGAM LESSON 1 LAWS OF MOTION One mark questions 1)Mass of an object is 10Kg.What is its weight on the earth (where w=mg, g=9.8m/s²) a) 49N, b) 25N, c) 98N, d) 100N 2)The freezing of biotechnology products like vaccines require The --------- Freezing system. a) liquid Helium, b) liquid Nitrogen, c) liquid Ammonia, d) liquid hydrogen 3) Metals frozen to low temperatures showed more resistance to wear This is known as ---- a) Cryogenic yielding b) cryogenic hardening, c) cryogenic cooling d) cryogenic shaping 4)The momentum of a truck at rest is ----- a)Very large , b) very small, c) zero, d) infinity 5)The weight of 50 kg person at the surface of the earth is ------- a) 50N, b) 35 N, c) 380N, d) 490N 6)The acceleration in a body is due to ---------- a) balanced force b) un- balanced force c) electrostatic force 7) The physical quantity which is equal to rate of change of momentum is ----------- a) displacement b) acceleration c) force d) impulse 8) The momentum of massive object at rest is ------ a) very large b) very small c) zero d) infinity 9) SI unit of force is ---- a) newton b) Kg c) pascal d) ms-1 10) Inertia of a body has direct dependence on ----- a) mass b) velocity c) area d) volume 11) which one of the following objects offer larger inertia-------- a) small massive objects b) more massive objects c) zero massive objects 12) The equation of momentum is ------- a) P=ma b) P=mv c) P= m/v d) P= v/m 13)The SI unit of momentum is ------ a) kgs-1 b) kgms c) kgms-1 d) kgm-1s-1 14) Which law gives the method of measuring force ---- a) Newton’s first law of motion b) Newton’s second law of motion c) Newton’s third law of motion d) Newton’s law of gravitation 15) The rate of change of momentum of a body is ------- a) force b) acceleration c) work d) impulse 16) One newton is equal to -------- a) 1ms-1 b) 1kg c) 1kgms-2 d) 1kg/ms-2 17)Swimming is possible because of ------ a) Newton’s first law of motion b) Newton’s second law of motion c) Newton’s third law of motion d) Newton’s law of gravitation 18) The working of rocket is based on ------ a) Newton’s first law of motion b) Newton’s second law of motion c) Newton’s third law of motion d) both a and b 19) The unit of moment of force is ------------- a) Nm-1 b) Nm c) N d) Nm2 20) A couple produces -------- a) linear motion b) rotational motion c) both a and b d) none 21) The value of universal gravitational constant is ------- a) 6.673×1011Nm2kg-2 b) 6.673×10-11Nm2kg-2 c) 66.73×10-11Nm2kg-2 d) 9.8×10-11Nm2kg-2 22) The amount of matter present in a body is called ----- a) weight b) energy c) acceleration d) mass 23)The gravitational pull acting on the body is called ----- a) mass b) velocity c) weight d) gravitational 24) The weight of the body varies along with the values of ----- a) gravitational constant b) acceleration due to gravity c) mass of earth d) none 25) which value of g is taken as standard? a) at sea level b) at equator c) at Greenwich d) at sea level and a latitude 450 26) which of the following were picked up by the CXIS X-ray camera a) Aluminium b) Magnesium c) silicon d) All the above 27) In physics cryogenics is the study of the production of ------- a) low temperature b) high temperature c) very low temperature d) very high temperature 28) Which of the following cryogenic fuels is mainly used as rocket fuel? a) liquid hydrogen b) liquid nitrogen c) both a and b d) liquid helium 29) MRI is used to scan the inner organs of body penetrating very intense— a) electric field b) magnetic field c) gravitational field d) both a and b 30) Liquified gases are sprayed on the cables to keep them cool and reduce their ------- a) voltage b) capacitance c) resistance d) current 31) In magnetic resonance imaging the magnetic field is generated by--- a) conductor b) semi conductor c) insulators d) super conductors 32) Indian’s first lunar probe is ---- a) Chandrayaan I b) Chandrayaan II c) Rohini d) Aryabatta 33) The project director of Chandrayaan I and Chandrayaan II is – a) Sir CV Raman b) APJ Abdulkalam c) MylswamyAnnadurai 34)In physics cryogenics is the study of production of very low temperatures Below-------- a) 123K b) 125K c) 121K d) 122K 35) When two or more forces acting on a body and the body does not change its position , then the forces are ----------- a) imbalanced b) mechanical c) balanced d) none 36) To change the state or position of an object ------ force is required a) balanced b) imbalanced c) electric d) elastic 37) Acton and reaction do not balance each other because they-------- a) act on the same body b) do not act on the same body c) are in opposite direction d) are equal 38) Action and reaction forces are --------- a) equal in magnitude b) equal in direction c) opposite in direction d) both a and c 39) In a collision between heavier body and a lighter body , which body experiences a greater force ? a) Heavier body b) lighter body c) both the body experience the same force d) both body exchange acceleration 40) A gun gets kicked back when a bullet is fired . It is a good example of Newton’s ---------- a) gravitational law b) first law c) second law d) third law 41) Two equal and opposite forces whose line of action do not coincide are said to constitute ------ a) couple b) torque c) unlike forces d) parallel forces 42) ------- is an example of couple a) opening or closing a tap b) turning of key in lock c) steering wheel of car d) all the above 43) Force of attraction between any two objects in the universe is called --- a) gravitational force b) mechanical force c) magnetic force d) electrostatic 44) Weight is measured using a ---------- a) spring balance b) physical balance c) beam balance d) two pan balance 45) In vaccum all freely falling objects have the same ------- a) speed b) velocity c) force d) acceleration 46)An artificial structure designed for humans to live and work in outer space is ---------- a) space ship b) Space shuttle c) space station d) space probe 47)Which cryogen is legally purchasable throughout the world? a) liquid helium b) liquid hydrogen c) liquid nitrogen d) all the above 48) Liquified gases are used in underground cable power transmission is to -- a) reduce the resistance b) decrease the current c) increase the resistance d) increase the potential 49) Name the cryogen used for chilling and freezing ? a) liquid nitrogen b) liquid helium c) liquid hydrogen d) liquid oxygen 50) The SI unit of acceleration due to gravity g is ------ a) ms-1 b) ms c) ms-2 d) ms2
Posted on: Sun, 14 Dec 2014 14:02:32 +0000
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