Forwarded from BEST STUDY
Dynamics is a branch of mechanics concerned with the motion of an object (UEE 2013/14)
Anonymous Quiz
13%
Whose velocity is constant
24%
Without it's cause
18%
Under the cause of balance forces
44%
Under the cause of force
Forwarded from BEST STUDY
Identify the correct statement about energy ,work &force
Anonymous Quiz
11%
Energy cannot be posses by an object at rest
4%
Machine can multiply energy but not force
64%
Force is vector whereas work &energy scalar
20%
Work is said to be done a whenever the force is exerted on an object
Forwarded from BEST STUDY
The momentum of a rotating object is defined as the product of its (UEE 2016)
Anonymous Quiz
26%
Mass&angular velocity
21%
Momentum of inertia &the square of the angular velocity
51%
Momentum of inertia &angular velocity
2%
Mass&one-half of the square of the angular velocity
Forwarded from BEST STUDY
Which one of the following factors does NOT affect the momentum of inertia of an object?(2016)
Anonymous Quiz
18%
The axis about which the object is rotating
18%
The size of the object
50%
The angular speed of the object
14%
Mass of the object
Forwarded from BEST STUDY
The rotational analogue of mass is :
Anonymous Quiz
56%
Momentum of inertia
15%
Angular momentum
17%
Torque
12%
angular acceleration
Forwarded from BEST STUDY
What is the measure of the distribution of the mass of a body in relation to its axis of rotation?
Anonymous Quiz
37%
Torque
43%
Momentum of inertia
15%
Angular momentum
4%
Angular speed
Forwarded from BEST STUDY
The angular velocity of fly wheel is 8 rad/s .what will be the angular displacement of fly wheel in pi s?
Anonymous Quiz
29%
4 rev
21%
8 rad/s
35%
8 pi rev
15%
4 rad
Forwarded from BEST STUDY
A particle moves in a circle of radius r with an Angular velocity w &an Angular acceleration. What is the Centripetal acceleration?
Anonymous Quiz
10%
@r
10%
Wr
46%
W^2r
33%
Wr^2
Forwarded from BEST STUDY
Angular velocity defined as the time rate
Anonymous Quiz
68%
Of change of angular position
7%
At which the amount of inertia changes
16%
Of change of distance
9%
Of change of tangential distance
Forwarded from BEST STUDY
All electromagnetic waves travel with the same speed in
Anonymous Quiz
79%
Vacuum
6%
Water
11%
Mirror
4%
Air
Forwarded from BEST STUDY
An example of a body moving with constant speed but still accelerating is
Anonymous Quiz
31%
A body moving on a straight road
13%
A body moving on a straight railway track
51%
A body moving in a circular
5%
A body falling in a viscous
Forwarded from BEST STUDY
A voltmeter should be connected in parallel across a resistor in a circuit because
Anonymous Quiz
10%
It measure current
13%
It requires high current
41%
It's resistance is very small
36%
It's resistance is very high
Forwarded from BEST STUDY
Which one is not factors affect of laminar fluid flow
Anonymous Quiz
38%
Temperature
23%
Viscosity
27%
Density of solid object
13%
Speed of liquid
Forwarded from BEST STUDY
Forwarded from BEST STUDY
What is the name given to the spreading of wave when they pass through a gap or around an obstacle?
Anonymous Quiz
10%
Reflection
55%
Diffraction
24%
Refraction
10%
Interference
Forwarded from BEST STUDY
Atmospheric pressure increases is
Anonymous Quiz
17%
Air density decreases
51%
Altitude decreases
21%
Air temperature increases
11%
Latitude decreases
Forwarded from BEST STUDY
If the direction of movement air plane changes &it's speed remains constant &,which quantity must remain the same
Anonymous Quiz
24%
Displacement
37%
Momentum
22%
Kinetic energy
17%
Velocity
Forwarded from BEST STUDY
Forwarded from BEST STUDY
When a wave travels through a medium, the particles of the medium
Anonymous Quiz
41%
Oscillate about their Equilibrium position
22%
Move in opposite direction to the wave
29%
Move In the same direction as the wave
8%
Move to the center of the medium
🔥🔥🔥Chemistry UNIT 1 QUESTION
1. Who proposed the planetary model of the atom?
a) Ernest Rutherford
b) Niels Bohr
c) J.J. Thomson
d) James Chadwick
2. Which subatomic particle has a positive charge?
a) Electron
b) Proton
c) Neutron
d) Nucleus
3. What is the approximate mass of an electron?
a) 1 atomic mass unit (amu)
b) 1/2 atomic mass unit (amu)
c) 1/1836 atomic mass unit (amu)
d) 1836 atomic mass units (amu)
4. Which of the following is NOT a fundamental particle?
a) Quark
b) Lepton
c) Photon
d) Neutrino
5. Who discovered the existence of neutrons?
a) Ernest Rutherford
b) Niels Bohr
c) J.J. Thomson
d) James Chadwick
6. What is the maximum number of electrons that can occupy the first energy level of an atom?
a) 2
b) 4
c) 8
d) 16
7. What is the charge of an atom that has gained two electrons?
a) -1
b) -2
c) +1
d) +2
8. What is the atomic number of an atom?
a) The number of protons in the nucleus
b) The number of electrons in the nucleus
c) The total number of protons and neutrons in the nucleus
d) The total number of electrons in the atom
9. What is an isotope?
a) An atom with a different number of neutrons
b) An atom with a different number of protons
c) An atom with a different number of electrons
d) An atom with a different number of energy levels
10. Which of the following best describes the electron cloud model?
a) Electrons are arranged in discrete energy levels around the nucleus.
b) Electrons are located in specific orbits around the nucleus.
c) Electrons are spread out in a cloud-like region around the nucleus.
d) Electrons are confined to specific regions within the nucleus.
Answers:
1. b) Niels Bohr
2. b) Proton
3. c) 1/1836 atomic mass unit (amu)
4. c) Photon
5. d) James Chadwick
6. a) 2
7. b) -2
8. a) The number of protons in the nucleus
9. a) An atom with a different number of neutrons
10. c) Electrons are spread out in a cloud-like region around the nucleus.
For more @bestchannelstudy
1. Who proposed the planetary model of the atom?
a) Ernest Rutherford
b) Niels Bohr
c) J.J. Thomson
d) James Chadwick
2. Which subatomic particle has a positive charge?
a) Electron
b) Proton
c) Neutron
d) Nucleus
3. What is the approximate mass of an electron?
a) 1 atomic mass unit (amu)
b) 1/2 atomic mass unit (amu)
c) 1/1836 atomic mass unit (amu)
d) 1836 atomic mass units (amu)
4. Which of the following is NOT a fundamental particle?
a) Quark
b) Lepton
c) Photon
d) Neutrino
5. Who discovered the existence of neutrons?
a) Ernest Rutherford
b) Niels Bohr
c) J.J. Thomson
d) James Chadwick
6. What is the maximum number of electrons that can occupy the first energy level of an atom?
a) 2
b) 4
c) 8
d) 16
7. What is the charge of an atom that has gained two electrons?
a) -1
b) -2
c) +1
d) +2
8. What is the atomic number of an atom?
a) The number of protons in the nucleus
b) The number of electrons in the nucleus
c) The total number of protons and neutrons in the nucleus
d) The total number of electrons in the atom
9. What is an isotope?
a) An atom with a different number of neutrons
b) An atom with a different number of protons
c) An atom with a different number of electrons
d) An atom with a different number of energy levels
10. Which of the following best describes the electron cloud model?
a) Electrons are arranged in discrete energy levels around the nucleus.
b) Electrons are located in specific orbits around the nucleus.
c) Electrons are spread out in a cloud-like region around the nucleus.
d) Electrons are confined to specific regions within the nucleus.
Answers:
1. b) Niels Bohr
2. b) Proton
3. c) 1/1836 atomic mass unit (amu)
4. c) Photon
5. d) James Chadwick
6. a) 2
7. b) -2
8. a) The number of protons in the nucleus
9. a) An atom with a different number of neutrons
10. c) Electrons are spread out in a cloud-like region around the nucleus.
For more @bestchannelstudy