Physics
General physics quiz covering mechanics, electricity, magnetism, optics, thermodynamics, and waves
Questions
Which of the following is the unit used for measuring a SOLID ANGLE?
- Radian
- Steradian
- π
- θ
- γ
When a blanket is beaten by a stick, the dust particles present in it are removed. This happens because of
- inertia
- force
- momentum
- impulse
- None of these
Identify the insulators from the following: Earth, Copper, Ebonite, Mica
- Mica and Earth
- Copper and Mica
- Earth and Ebonite
- Copper and Earth
- Ebonite and Mica
The substances, which when placed in a magnetic field are weakly magnetised in the direction of the applied field, are called paramagnetic substances. Which of the following is a paramagnetic substance?
- Nickel
- Diamond
- Bismuth
- Aluminum
- Mercury
Who laid the foundation of Quantum Theory?
- Roentgen
- Max Plank
- Edison
- Faraday
- Mandeleev
The credit for naming two types of charges (positive and negative) goes to
- Faraday
- Benjamin Franklin
- Coulomb
- Newton
- Nicholas
The quantities that are dependent on both a magnitude and a direction are called vector quantities. Which of the following is not a vector quantity?
- Impulse
- Moment of force
- Pressure
- Momentum
- Torque
The process of direct conversion of vapour into solid is known as
- hoar frost
- sublimation
- condensation
- freezing
- solidification
The time taken by light to reach the earth from the sun is
- 495 secs
- 496 secs
- 497 secs
- 498 secs
- 499 secs
Which of the following statements about gravity (g) is false?
- Value of g increases as the height or depth from earth's surface increases.
- g is maximum at poles.
- g in minimum at the equator.
- g decreases due to rotation of earth
- g decreases if the angular speed of the earth increases.
With which of the following units of temperature is ° (the degree symbol) not used?
- Celsius
- Fahrenheit
- Kelvin
- Réaumur
- Rankine
Which of the following statements is false about the viscosity of solids, liquids and gases?
- Viscosity of an ideal fluid is zero.
- Viscosity of solids lies between gases and liquids.
- Viscosity of gases is less than liquids.
- There is no viscosity in solids.
- All of the above are true.
Which of following statements is true about the characteristics of magnetic lines of force?
(a) Two lines of force never intersect each other.
(b) Two lines of force always intersect each other.
(c) Two lines of force sometimes intersect each other.
(d) Two lines of force are always perpendicular to each other.
- Two lines of force never intersect each other.
- Two lines of force always intersect each other.
- Two lines of force sometimes intersect each other.
- Two lines of force are always perpendicular to each other.
- None of these
Pitch of the sound can be measured using
- pitchometer
- transponder
- viscometer
- tonometer
- udometer
Which of the following animals cannot only detect, but also produce ultrasonic waves?
- Dogs
- Cats
- Bats
- Wolves
- Elephants
Newton's third law of motion states that, "To every action, there is an equal and oppsite reaction". Which of the following is not an example of Newton's third law of motion?
- Recoil of a gun
- Motion of a rocket
- Receiving a phone call
- The rider bends forward when a running horse suddenly stops.
- While drawing water, if the strings break up, the man drawing the water falls back.
Which of the following is true about cathode rays?
(a) Cathode rays are invisible and travel in a straight line.
(b) Cathode rays visible and travel in a straight line.
(c) Cathode rays cool the material they fall on.
(d) Cathode rays heat the material they fall on.
- a and c
- b and c
- b and d
- d and a
- d and c
When an object executing a simple harmonic motion passes through the mean position, which of the following statements about it is valid?
- Kinetic Energy is zero.
- Acceleration is maximum.
- Force acting on it is maximum.
- Potential Energy is maximum.
- Potential Energy is zero.
What type of energy transformation takes place in a battery?
- Chemical energy to electrical energy
- Chemical energy to light energy
- Mechanical energy to electrical energy
- Mechanical energy to chemical energy
- Electrical energy to chemical energy
Who is credited with the invention of rustless steel?
- William Hurst
- James Watt
- C Sholes
- Henry Berremer
- Harry Brearly
How can an ammeter be converted into a galvanometer?
- Connecting a very high resistance in parallel
- Connecting a very high resistance in series
- Connecting a shunt in series
- Connecting a shunt parallel to it
- Cannot be converted
Where should we place the object so as to get an enlarged, virtual and erect image using a convex lens?
- The object is placed beyond 2F.
- The object is placed at infinity.
- The object is placed at 2F.
- The object is placed between F and 2F.
- The object is placed between the pole (P) and F.
At what temperature is the density of water maximum?
- 0°C
- 4°C
- - 4°C
- 100°C
- 50°C
Which one of the following pairs of colours is not complementary?
- Green and cyan
- Green and yellow
- Green and magenta
- Blue and cyan
- Red and yellow
How many feet make 1 nautical mile?
- 6000
- 6050
- 6060
- 6080
- 6070
Fill in the blanks.
Conductance is denoted by _____ and its SI unit is ______.
- R, Siemen
- C, mho
- G, mho
- G, Siemen
- None of these
Which of the following cannot be explained by considering the wave nature of light?
i. Polarisation of light
ii. Photoelectric effect
iii. Compton effect
iv. Rectilinear propagation
v. Diffraction
- i and ii
- ii and iii
- iii and iv
- iv and v
- v and i
A ray is entering from one medium to another medium. Which of the following statements is true in this context?
- Frequency of rays doesn't change, but its wavelength changes.
- Frequency of rays changes, but its wavelength doesn't change.
- Phase and velocity of ray change but its wavelength doesn't change
- Phase and velocity of rays doesn't change, but its wavelength changes.
- Frequency, phase, velocity and wavelength; all change.
Fill in the blank.
1 fathom = ____ feet
- 4 feet
- 5 feet
- 6 feet
- 7 feet
- 8 feet
Cylindrical lenses are used as a remedy in case of
- astigmatism
- myopia
- hyper-myopia
- presbyopia
- hypermetropia