12th Std/ +2/ Plus Two : Physics Model Question Paper www.biharboard.bih.nic.in

Name of the Board : Bihar School Examination Board
Name of the Exam : Senior Secondary( XITH) EXAM
Subject : Physics
Document Type : Model Question Paper
Website : biharboard.bih.nic.in

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/biharboard.bih.nic.in/6977-MQS-Science-XIth.pdf

Physics Model Paper :

MODEL SET—I :
SECTION–I :
Objective Questions :
Instruction : Q. No. 1 to 22 : In the following questions there are only one correct answer.
You have to choose that correct answer.

Related : Bihar School Examination Board Senior Secondary English Question Paper Model : www.pdfquestion.in/6976.html

The dimensional representation for modulas of rigidity is given by ?
(a) ML2T-3 (b) ML-1T-2 (c)ML-1T-3 (d) MºLºTº

The ratio of S.I. units to the C.G.S. units of co-efficient of viscosity will be-
(a) 10-1 (b) 10-2 (c) 102 (d) 10

A body covers the first half of the distance between two places at a speed of 40 m/s and the secondhalf at 60 m/s. The average speed of the body during the whole journey will be.
(a) 48 m/sec (b) 50 m/sec (c) 40 m/sec (d) 0

A body moves along the circumference of a circular track. It returns back to its starting point after completing the circular track twice. If the radius of the track is R, the ratio of displacement to the distance covered by the body will be.
(a) 0 (b) 8pR (c) 2

In the gas equation RT PV = 2 , V represents.
(a) Volume of the container (b) Volume of 1 mole of a gas (c) Volume of 2 mole of a gas (d) Volume of 2

The thermo dynamic process in which no exchange of heat from the system taken place is called.
(a) Isothermal (b) adiabatic (c) Isobaric (d) none

The velocity of sound in moist air as compared to dry air will be–
(a) more (b) less (c) same (d) none

Beats are the result of–
(a) diffraction of sound wave (b) constructive and destructive interference
(c) destructive interference of sound (d) none

If the radius of the earth were to decrease by 1%, its mass remaining the same, the acceleration due to gravity on the surface of earth will–
(a) increased by 1% (b) increased by 2% (c) decreased by 1% (d) decreased by 2%

Instructions : Q. No. 11 to 15 In the following questions there are two statements. Statement- I follows Statements-II. You have to go through these statements and mark your answer from the given questions.
if both the statements are true but statement–II is not the correct explanation of statement–I
if statement–I is true but statement–II is false.
if statement–I is false but statement–II is true.
Statement–I : Inertia is that property ob a body owing to which the body opposes any change in its state of motion.
Statement–II : Inertia ? mass.

Statement–I : Friction is the recording force which opposes the relative motion of the two bodies in contact.
Statement–II : It depends upon the surface of the body.

Statement–I : Work is said to be done if a force acting on a body displaces the body through a certain distance in the direction or oppositet the direction of force.
Statement–II : Work done by conservative force in a closed path is not equal to zero.

Statement–I : Surface Tension of a liquid decreases with increasement of its temprature.
Statement–II : Surface tension of a liquid at critical temp. of the liquid becomes zero.

Statement–I : Velocity of a body executing S.H.M. is maximum at maximum displacement position.
Statement–II : Velocity of a body executing S.H.M. may be represented by, v = ? A2 – x2 .

Instructions : Question No. 16 to 18 In the following question there may be more thanone correct answer. You have to mark all the correct options.
1By the help of dimensional equation,
(a) we may find out the value of constant (k) used in relation, t = kmntygz
(b) we may drive relationship between various physical quantity.
(c) we may check the correct ness of formula.
(d) we may convert 1 N in dyne.

A sphere of mass m moving with constant velocity V hits another stationary sphere of same mass. If e is the co-efficient of restitution then,
(a) e ? 1 for elastic collision.
(b) for inelastic kinetic energy will not conserve.
(c) ratio of velocities of two spheres after collision will be 1–e = 1 + e (collision is inelastic).
(d) Both sphere will interchange their velocities

A projectile is projected at angle of 30º from the horizontal with a velocity of 98 m/sec then-
(a) time to reach the maximum height will be 5 sec.
(b) maximum height will be 122.5 m.
(c) time of flight will be 10 sec.
(d) horizontal range will be 490 m.