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Latest WBSSC SLST Secondary Assistant Teacher Physical Science Exam Question (Objective Questions), MCQ in English

Subjects : Physical Science

Question Bank WBSSC SLST Secondary Assistant Teacher (Physical Science) Exam - English
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Physical Science

Question 1Single Answer
What is the SI unit of momentum?
  1. A
    kg m/s
  2. B
    N
  3. C
    J
  4. D
    m/s²
Question 2Single Answer
The displacement of a body is zero. Which of the following is true?
  1. A
    Distance is also zero
  2. B
    Distance may or may not be zero
  3. C
    Acceleration is zero
  4. D
    Velocity is zero
Question 3Single Answer
Which of the following quantities has both magnitude and direction?
  1. A
    Mass
  2. B
    Temperature
  3. C
    Speed
  4. D
    Acceleration
Question 4Single Answer
The rate of change of velocity is called?
  1. A
    Speed
  2. B
    Acceleration
  3. C
    Displacement
  4. D
    Jerk
Question 5Single Answer
Which equation represents one-dimensional motion with uniform acceleration?
  1. A
    v = u + at
  2. B
    s = ut
  3. C
    v = s/t
  4. D
    s = vt
Question 6Single Answer
In which of the following collisions is kinetic energy conserved?
  1. A
    Inelastic
  2. B
    Completely inelastic
  3. C
    Elastic
  4. D
    Explosion
Question 7Single Answer
The direction of frictional force is always?
  1. A
    Perpendicular to the surface
  2. B
    Along the motion
  3. C
    Opposite to motion
  4. D
    At an angle to the motion
Question 8Single Answer
What is the unit of impulse?
  1. A
    kg m/s
  2. B
    N·s
  3. C
    Both A and B
  4. D
    J/s
Question 9Single Answer
Who gave the laws of motion?
  1. A
    Newton
  2. B
    Kepler
  3. C
    Einstein
  4. D
    Galileo
Question 10Single Answer
Work done is a scalar quantity because?
  1. A
    It has magnitude only
  2. B
    It has direction
  3. C
    It is a cross product
  4. D
    It is a vector
Question 11Single Answer
When is the work done by a force zero?
  1. A
    When force is perpendicular to displacement
  2. B
    When there is no displacement
  3. C
    When force is zero
  4. D
    All of these
Question 12Single Answer
What is the SI unit of work?
  1. A
    Newton
  2. B
    Joule
  3. C
    Watt
  4. D
    Calorie
Question 13Single Answer
Power is defined as?
  1. A
    Force × displacement
  2. B
    Work / time
  3. C
    Energy × time
  4. D
    Work × time
Question 14Single Answer
In the absence of external force, linear momentum is?
  1. A
    Increasing
  2. B
    Decreasing
  3. C
    Constant
  4. D
    Zero
Question 15Single Answer
What type of quantity is momentum?
  1. A
    Scalar
  2. B
    Vector
  3. C
    Both
  4. D
    None
Question 16Single Answer
Which law defines inertia?
  1. A
    Newton’s First Law
  2. B
    Newton’s Second Law
  3. C
    Newton’s Third Law
  4. D
    Law of Gravitation
Question 17Single Answer
Static friction is always?
  1. A
    Greater than kinetic friction
  2. B
    Less than kinetic friction
  3. C
    Equal to kinetic friction
  4. D
    Negligible
Question 18Single Answer
Hooke’s law relates?
  1. A
    Stress and velocity
  2. B
    Force and area
  3. C
    Stress and strain
  4. D
    Pressure and volume
Question 19Single Answer
Which of the following is not a modulus of elasticity?
  1. A
    Young modulus
  2. B
    Bulk modulus
  3. C
    Shear modulus
  4. D
    Modulus of inertia
Question 20Single Answer
The rise of a liquid in a capillary tube is due to?
  1. A
    Viscosity
  2. B
    Density
  3. C
    Surface tension
  4. D
    Cohesion
Question 21Single Answer
Poiseuille’s law is applicable to?
  1. A
    Gases only
  2. B
    Ideal fluids
  3. C
    Liquid flow in narrow tubes
  4. D
    Solid rods
Question 22Single Answer
Which law is used to measure the force on a sphere falling through a fluid?
  1. A
    Bernoulli’s law
  2. B
    Pascal’s law
  3. C
    Stoke’s law
  4. D
    Archimedes’ principle
Question 23Single Answer
Archimedes’ principle deals with?
  1. A
    Elasticity
  2. B
    Buoyancy
  3. C
    Capillarity
  4. D
    Friction
Question 24Single Answer
What is meant by elastic limit?
  1. A
    Minimum stress required for deformation
  2. B
    Maximum strain before breaking
  3. C
    Maximum stress without permanent deformation
  4. D
    Ratio of stress to strain
Question 25Single Answer
What does Pascal’s law state?
  1. A
    Pressure increases with depth
  2. B
    Pressure applied to a fluid is transmitted equally in all directions
  3. C
    Buoyant force equals weight of displaced fluid
  4. D
    None of these
Question 26Single Answer
Which of these is not a type of stress?
  1. A
    Tensile
  2. B
    Compressive
  3. C
    Shear
  4. D
    Capillary
Question 27Single Answer
A body thrown vertically upward returns to ground due to?
  1. A
    Inertia
  2. B
    Momentum
  3. C
    Gravity
  4. D
    Friction
Question 28Single Answer
In a projectile motion, horizontal component of velocity is?
  1. A
    Zero
  2. B
    Constant
  3. C
    Increasing
  4. D
    Decreasing
Question 29Single Answer
The coefficient of kinetic friction is defined as the ratio of?
  1. A
    Force of friction to normal force
  2. B
    Normal force to frictional force
  3. C
    Mass to weight
  4. D
    Weight to mass
Question 30Single Answer
What is terminal velocity?
  1. A
    Constant velocity of a falling object
  2. B
    Maximum velocity of a projectile
  3. C
    Velocity of fluid in capillary
  4. D
    Speed of light
Question 31Single Answer
What causes viscosity in fluids?
  1. A
    Molecular cohesion
  2. B
    External pressure
  3. C
    Gravitational force
  4. D
    Frictional force
Question 32Single Answer
The product of mass and velocity gives?
  1. A
    Force
  2. B
    Momentum
  3. C
    Acceleration
  4. D
    Work
Question 33Single Answer
What type of motion is represented by a parabolic path?
  1. A
    Uniform motion
  2. B
    Projectile motion
  3. C
    Circular motion
  4. D
    Oscillatory motion
Question 34Single Answer
When a body floats in a liquid, its weight is?
  1. A
    More than upthrust
  2. B
    Equal to upthrust
  3. C
    Less than upthrust
  4. D
    Zero
Question 35Single Answer
What is the nature of vector product?
  1. A
    Scalar
  2. B
    Vector
  3. C
    Both
  4. D
    None
Question 36Single Answer
The energy possessed by a body due to its position is called?
  1. A
    Kinetic energy
  2. B
    Potential energy
  3. C
    Thermal energy
  4. D
    Internal energy
Question 37Single Answer
Which force acts opposite to the direction of motion in a fluid?
  1. A
    Tension
  2. B
    Buoyant force
  3. C
    Drag
  4. D
    Normal force
Question 38Single Answer
The frictional force during motion is known as?
  1. A
    Static friction
  2. B
    Rolling friction
  3. C
    Kinetic friction
  4. D
    Limiting friction
Question 39Single Answer
Which is not an example of vector quantity?
  1. A
    Velocity
  2. B
    Force
  3. C
    Work
  4. D
    Acceleration
Question 40Single Answer
In projectile motion, time of flight depends on?
  1. A
    Vertical component of velocity
  2. B
    Horizontal component of velocity
  3. C
    Both components
  4. D
    None
Question 41Single Answer
What is the cause of surface tension?
  1. A
    Gravity
  2. B
    Adhesive forces
  3. C
    Cohesive forces
  4. D
    Viscosity
Question 42Single Answer
Which of the following is a unit of strain?
  1. A
    Pascal
  2. B
    Dimensionless
  3. C
    Newton
  4. D
    Joule
Question 43Single Answer
What is heat?
  1. A
    A measure of temperature
  2. B
    A form of energy transferred due to temperature difference
  3. C
    A state of matter
  4. D
    A type of mechanical work
Question 44Single Answer
What is temperature?
  1. A
    The total energy of a substance
  2. B
    A measure of the average kinetic energy of particles
  3. C
    The amount of heat in a body
  4. D
    The volume of a substance
Question 45Single Answer
What is the relation between Celsius and Kelvin scales?
  1. A
    K = °C + 273
  2. B
    K = °C - 273
  3. C
    K = °C × 273
  4. D
    K = °C ÷ 273
Question 46Single Answer
What is thermal expansion?
  1. A
    Decrease in size due to heat
  2. B
    Increase in size due to heat
  3. C
    Change in color due to heat
  4. D
    Change in mass due to heat
Question 47Single Answer
What is the coefficient of linear expansion?
  1. A
    Change in length per unit length per degree rise in temperature
  2. B
    Change in area per unit area per degree rise in temperature
  3. C
    Change in volume per unit volume per degree rise in temperature
  4. D
    Change in mass per unit mass per degree rise in temperature
Question 48Single Answer
What is the coefficient of superficial expansion?
  1. A
    Change in length per unit length per degree rise in temperature
  2. B
    Change in area per unit area per degree rise in temperature
  3. C
    Change in volume per unit volume per degree rise in temperature
  4. D
    Change in mass per unit mass per degree rise in temperature
Question 49Single Answer
What is apparent expansion of a liquid?
  1. A
    Expansion of the liquid ignoring container expansion
  2. B
    Expansion of the liquid including container expansion
  3. C
    Expansion of the container only
  4. D
    Contraction of the liquid
Question 50Single Answer
What is real expansion of a liquid?
  1. A
    Expansion of the liquid ignoring container expansion
  2. B
    Actual expansion of the liquid including container expansion
  3. C
    Expansion of the container only
  4. D
    Contraction of the liquid
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