Physics Properties Of Matter Level: High School
Archimedes Principle
A piece of wood floats in oil of density 800 kg/m^3 with 25% of its volume above the surface of the oil . If the piece of wood is placed in water , it will float in water witha) 75% of its volume above the water
b) 60 % of its volume above the water
c) 25% of its volume above the water
d) 40% of its volume above the water
Physics Measurements Level: High School
What is the percentage error in the measurement of 23 +- 1 m^3 ?a) 43 %
b) 0.4 %
c) 4%
d) 23%
Physics Waves And Oscillations Level: High School
A sound level of 0 dB corresponds to an intensity of ?a) 10^-6 W/m^2
b) 0 W/m^2
c) 10^-8 W/m^2
d) 10^-12 W/m^2
Physics Rotational Mechanics Level: High School
Circular Motion
A 200 g object is moving in a circle of radius 4.0 m at a uniform speed of 6.0 m/s . What is the net force acting on the object ?a) 1.8 N away from the center of the circle
b) 1.8 N towards the center of the circle
c) 3.6 N towards the center of the circle
d) 3.6 N tangential to the circle
Physics Work,Power & Energy Level: High School
In a perfectly elastic collision :a) Momentum and kinetic energy are conserved
b) Momentum is not conserved but kinetic energy is
c) Neither momentum nor kinetic energy is conserved
d) Momentum is conserved but not kinetic energy
Physics Ray Optics Level: High School
Reflections
The radius of curvature of a spherical mirror is 32 cm . Rays parallel to the axis of the mirror will be brought into focus at a point that is what distance from the mirror ?a) 8.0 cm
b) 4.0 cm
c) 32 cm
d) 16 cm
Physics Force & Laws Of Motion Level: High School
A car is traveling downhill with a constant velocity . Which of the following statement is true ?a) There is a net vertical force acting on the car
b) There is a net force on the car in the uphill direction
c) There is a net force acting on the car in the downhill direction
d) There is no net force acting on the car .
Physics Heat & Thermodynamics Level: High School
The coefficient of thermal conductivity has the unit :a) J/(s K)
b) J/(m K )
c) W/ (m K )
d) W/(s K)
Physics Vectors Level: High School
Dimensions
If x = a + bt + ct^2 , where x is in meters and t is in seconds , the unit of c is :a) 1/s^2
b) m
c) m/s^2
d) m/s
Physics Ray Optics Level: High School
A beam of light falls from air onto a slab of transparent plastic at an angle of incidence of 45degrees C . The angle of refraction of the refracted ray in the plastic is 30 degrees C . What is the refractive index of the plastica) 1
b) ½
c) Square root 2
d) 2
Physics Ray Optics Level: High School
A beam of light falls from air onto a slab of transparent plastic at an angle of incidence of 45degrees C . The angle of refraction of the refracted ray in the plastic is 30 degrees C . What is the refractive index of the plastica) 1
b) ½
c) Square root 2
d) 2
Physics Measurements Level: High School
The significant figure in 0.080 kg is :a) 3
b) 4
c) 2
d) 1
Physics Waves And Oscillations Level: High School
Doppler effects
A train is approaching a station and blows its horn with a frequency of 200 Hz . If the train has a speed of 25 m/s and the speed of sound is 350 m/s , What is the frequency of sound heard by the people standing on the platform ?a) 186 Hz
b) 190 Hz
c) 200 Hz
d) 215 Hz
Physics Rotational Mechanics Level: High School
A force of 30 N is applied perpendicularly to the face of a door at a distance of 1.5 m from the hinge of the door , Find the torque on the door about its hinge .a) 2 Nm
b) 20 Nm
c) 45 Nm
d) 20 Nm
Physics Work,Power & Energy Level: High School
A 50 g of ball of putty moving with a velocity of 3.0 m/s has an inelastic head-on with a stationary mass of 50 g and sticks to it , find the velocity of mass and putty after the collisiona) 1.1 m/s
b) 1.5 m/s
c) 1.7 m/s
d) 1.3 m/s
