The SI standard of time is based on-------? A. the daily rotation of the earth B. the frequency of light emitted by Kr86 C. the yearly revolution of the earth about the sun D. a precision pendulum clock E. none of these (Answer)

The SI standard of time is based on-------?

A. the daily rotation of the earth

B. the frequency of light emitted by Kr86

C. the yearly revolution of the earth about the sun

D. a precision pendulum clock

E. none of these (Answer)
by

1 Answer

Answer :

E. none of these (Answer)
by

Related questions

We always see the same lace of the moon, because – (1) It is smaller than the earth (2) It revolves on its axis in a direction opposite to that of the earth (3) It takes equal time for revolution around the earth and rotation on its own axis (4) It rotates at the same speed as the earth around the sun

Description : We always see the same lace of the moon, because - (1) It is smaller than the earth (2) It revolves on its axis in a direction opposite to that of the earth (3) It takes equal time for revolution ... the earth and rotation on its own axis (4) It rotates at the same speed as the earth around the sun

Last Answer : (3) It takes equal time for revolution around the earth and rotation on its own axis Explanation: It is tidal locking that causes the synchronous rotation which causes the Moon to present "just one side ... to revolve (orbit) around the Earth. So it maintains a "constant face" in our direction.

We always see the same lace of the moon, because – (1) It is smaller than the earth (2) It revolves on its axis in a direction opposite to that of the earth (3) It takes equal time for revolution around the earth and rotation on its own axis (4) It rotates at the same speed as the earth around the sun

Description : We always see the same lace of the moon, because - (1) It is smaller than the earth (2) It revolves on its axis in a direction opposite to that of the earth (3) It takes equal time for revolution ... the earth and rotation on its own axis (4) It rotates at the same speed as the earth around the sun

Last Answer : (3) It takes equal time for revolution around the earth and rotation on its own axis Explanation: It is tidal locking that causes the synchronous rotation which causes the Moon to present "just one side ... to revolve (orbit) around the Earth. So it maintains a "constant face" in our direction.

We always see the same face of the moon, because (1) it is smaller than the earth (2) it revolves on its axis in a direction opposite to that of the earth (3) it takes equal time for revolution around the earth and rotation on its own axis (4) it rotates at the same speed as the earth around the sun

Description : We always see the same face of the moon, because (1) it is smaller than the earth (2) it revolves on its axis in a direction opposite to that of the earth (3) it takes equal time for revolution around the earth and rotation on its own axis (4) it rotates at the same speed as the earth around the sun

Last Answer : it takes equal time for revolution around the earth and rotation on its own axis

The earth’s movement around the sun is called the ………………. of the earth. (a) revolution (b) rotation (c) motion

Description : The earth’s movement around the sun is called the ………………. of the earth. (a) revolution (b) rotation (c) motion

Last Answer : (a) revolution

What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Description : What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Last Answer : The answer is 'It will stopaltogether'

What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Description : What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Last Answer : answer:

What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Description : What will be If a pendulum clock be taken from the earth to a revolving artificial satellite? -General Knowledge

Last Answer : answer:

What will be If a pendulum clock be taken from the earth to a revolving artificial satellite?

Description : What will be If a pendulum clock be taken from the earth to a revolving artificial satellite?

Last Answer : It will stop altogether

A slow-running pendulum clock can be speeded up by--------? A. Increasing the length of the rod B. Increasing the weight of the bob C. Reducing the length of the rod (Answer) D. Reducing the weight of the bob

Description : A slow-running pendulum clock can be speeded up by--------? A. Increasing the length of the rod B. Increasing the weight of the bob C. Reducing the length of the rod (Answer) D. Reducing the weight of the bob

Last Answer : C. Reducing the length of the rod (Answer)

1. In which years did the Right to Information Act come into force? 2. The electron emitted in beta radiation originates from where? 3. The name of Geoff Bycott is associated with which game? 4. What is exact time taken by the earth for single rotation on its own axis? 5. Who built the famous Dilwara temple at Mount Abu in the 13th century ?

Description : 1. In which years did the Right to Information Act come into force? 2. The electron emitted in beta radiation originates from where? 3. The name of Geoff Bycott is associated with which game? ... of the day during summer? 20. Which Mughal emperor is credited with the composition of Hindi songs?

Last Answer : Answer : 1 1. 2005 2. Inner orbits of atoms 3. Cricket 4. 23 hrs 56 minutes 4.09 see 5. Tejapala 6. D. W. Eisenhower 7. Inner part of ear 8. V.V. Giri 9. Argon 10. Amir Khusrau 11. R ... low pressure 15. Tomb of Sikandar Lodi 16. 38 ATP 17. In the Supreme Court 18. Cathode 19. Norway 20. Jahangir

The phases of the moon are partially the result of the------? A. Changes in the shape of the moon B. Revolution of the moon around the earth (Answer) C. Variations in the moon’s gravitation D. Variations in the speed of rotation of the moon

Description : The phases of the moon are partially the result of the------? A. Changes in the shape of the moon B. Revolution of the moon around the earth (Answer) C. Variations in the moon’s gravitation D. Variations in the speed of rotation of the moon

Last Answer : B. Revolution of the moon around the earth (Answer)

A clock with a second pendulum is gaining 5 minutes a day. To correct it a.The eccentricity of bob with pendulum should be decreased b.The length of the pendulum should be decreased c.The length of pendulum should not be changed d.The length of the pendulum should be increased e.The eccentricity of bon with pendulum should be increased

Description : A clock with a second pendulum is gaining 5 minutes a day. To correct it a.The eccentricity of bob with pendulum should be decreased b.The length of the pendulum should be decreased c.The ... .The length of the pendulum should be increased e.The eccentricity of bon with pendulum should be increased

Last Answer : d. The length of the pendulum should be increased

Can a silicon nucleus `(._(14)^(31)Si)` transfrom into a phosphorus nucleus `(._(15)^(31)P)` ? What particle would be emitted in the process ? What is

Description : Can a silicon nucleus `(._(14)^(31)Si)` transfrom into a phosphorus nucleus `(._(15)^(31)P)` ? What particle would be emitted in the process ? What is

Last Answer : Can a silicon nucleus `(._(14)^(31)Si)` transfrom into a phosphorus nucleus `(._(15)^(31)P)` ? What ... = 30.97535 am u, m_(p) = 30.97376 am u`

An ordinary clock loses time in summer. This is because (a) The length of the pendulum increases and time period increases (b) The length of the pendulum increases and time period decreases (c) The length of the pendulum decreases and time period increases (d) The length of the pendulum decreases and time period decreases

Description : An ordinary clock loses time in summer. This is because (a) The length of the pendulum increases and time period increases (b) The length of the pendulum increases and time period decreases ... decreases and time period increases (d) The length of the pendulum decreases and time period decreases

Last Answer : Ans:(a)

The distance moved and the magnitude of displacement are equal in ? (a) The earth is revolving around the Sun (b) Object moving in circular path (c) The pendulum is moving to and fro (d) Object moving on straight road -Science

Description : The distance moved and the magnitude of displacement are equal in ? (a) The earth is revolving around the Sun (b) Object moving in circular path (c) The pendulum is moving to and fro (d) Object moving on straight road -Science

Last Answer : (d) only. Distance and displacement in all other cases

A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum division in the measuring clock

Description : A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum division in the measuring clock

Last Answer : A student measures time for 20 oscillations of a simple pendulum as 30 s. 32 s, 35 s and 31 s. 1f the minimum ... 1 (C) 32 2 (D) 32 5

I have a Barwick Wall clock Model #4994. First, how old is it And second , what are the levers on the sides of the dial at 3 and 9 o'clock It has a pendulum?

Description : I have a Barwick Wall clock Model #4994. First, how old is it And second , what are the levers on the sides of the dial at 3 and 9 o'clock It has a pendulum?

Last Answer : minutes

Who invented the pendulum clock ?

Last Answer : Dutch scientist C. Hygens invented the pendulum clock

A slow-running pendulum clock can be speeded up by? A. Reducing the weight of the bob B. Reducing the length of the rod C. Increasing the weight of the bob D. Increasing the length of the rod

Description : A slow-running pendulum clock can be speeded up by? A. Reducing the weight of the bob B. Reducing the length of the rod C. Increasing the weight of the bob D. Increasing the length of the rod

Last Answer : ANSWER: B

Atmospheric pressure exerted on the earth is due to the _____ A. Rotation of the Earch B. Revolution of the earth C. Grasvitational pull D. Uneven heating of the earth

Description : Atmospheric pressure exerted on the earth is due to the _____ A. Rotation of the Earch B. Revolution of the earth C. Grasvitational pull D. Uneven heating of the earth

Last Answer : ANSWER: C

The moon is showing its same face to the earth because – (1) It is not rotating about its own axis (2) Its rotation and revolution are opposite (3) Its periods of rotation and revolution are the same (4) Its rotation is faster than its revolution

Description : The moon is showing its same face to the earth because – (1) It is not rotating about its own axis (2) Its rotation and revolution are opposite (3) Its periods of rotation and revolution are the same (4) Its rotation is faster than its revolution

Last Answer : (3) Its periods of rotation and revolution are the same Explanation: Because it is "tidally-locked" to the Earth. The Earth's gravity slows down the moon's rotation, so that it rotates at the same ... who walks around a center pole, but shifts their body so they are always facing it as they walk.

The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above

Description : The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above

Last Answer : (2) rotation of the earth Explanation: If the Earth didn't rotate, winds would travel either north or south due to differences in temperature and pressure at different latitudes. But since the Earth does ... of time, such as large-scale movement of air in the atmosphere or water in the ocean.

Earthquakes are caused by – (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Description : Earthquakes are caused by – (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Last Answer : (2) Tectonism Explanation: Earthquakes result from the sudden release of energy in the Earth's crust that creates seismic waves. Most occur along plate boundaries. Tectonic earth-quakes occur ... there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane.

Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Description : Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Last Answer : (3) gravitational pull Explanation: The atmosphere is made up of gasses. Gasses are physical substances, and all physical substance has weight. The atmosphere is 25 miles thick, and that 25 miles ... square inch because of the gravitational pull. That's how atmosphere exerts pressure on the earth.

Is a kind of satellite which has a period of revolution equivalent to the period of rotation of the earth about its axis. A. Passive satellite B. Synchronous satellite C. Active satellite.D. Geosynchronous satellite

Description : Is a kind of satellite which has a period of revolution equivalent to the period of rotation of the earth about its axis. A. Passive satellite B. Synchronous satellite C. Active satellite D. Geosynchronous satellite

Last Answer : D. Geosynchronous satellite

An earth satellite whose period of revolution is equal to the period of rotation of the earth about its axis. A. Geosynchronous B. Steerable C. Passive D. Active

Description : An earth satellite whose period of revolution is equal to the period of rotation of the earth about its axis. A. Geosynchronous B. Steerable C. Passive D. Active

Last Answer : A. Geosynchronous

Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Description : Atmospheric pressure exerted on earth is due to : (1) rotation of earth (2) revolution of earth (3) gravitational pull (4) uneven heating of earth

Last Answer : gravitational pull

The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above

Description : The deflection of the winds to the right in the northern hemisphere is caused by : (1) revolution of the earth (2) rotation of the earth (3) uneven heating of the earth (4) All the above 

Last Answer : rotation of the earth

Earthquakes are caused by (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Description : Earthquakes are caused by (1) Denudation (2) Tectonism (3) Earth revolution (4) Earth rotation

Last Answer : Tectonism

The moon is showing its same face to the earth because (1) It is not rotating about its own axis (2) Its rotation and revolution are opposite (3) Its periods of rotation and revolution are the same (4) Its rotation is faster than its revolution

Description : The moon is showing its same face to the earth because (1) It is not rotating about its own axis (2) Its rotation and revolution are opposite (3) Its periods of rotation and revolution are the same (4) Its rotation is faster than its revolution

Last Answer : Its periods of rotation and revolution are the same

Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above

Description : Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above

Last Answer : Answer: Option D

The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law

Description : The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law

Last Answer : D. Plank’s law

“When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted”

Description : “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted”

Last Answer : Plank’s law

The office of the every Inspector should be thoroughly inspected at least once in every by the ________ in accordance with the standard questions a) Quarterly , Supdt b) Half yearly, Supdt c) Twelve month, Supdt d) None of these

Description : The office of the every Inspector should be thoroughly inspected at least once in every by the ________ in accordance with the standard questions a) Quarterly , Supdt b) Half yearly, Supdt c) Twelve month, Supdt d) None of these

Last Answer : c) Twelve month, Supdt

During a 30-year period, a severe drought occurred in three separate years. According to this information, what is the yearly frequency of drought?

Description : During a 30-year period, a severe drought occurred in three separate years. According to this information, what is the yearly frequency of drought?

Last Answer : 0.1

Why does earth rotation not provide a suitable time standard?

Description : Why does earth rotation not provide a suitable time standard?

Last Answer : The Earth is globe shaped, and the Sun can't illuminate the World at the same time. Therefore, the time is different as the World rotates. If the time was the same all over the ... World. Standard time is maintained by making allowance for this differential using the Prime Meridian (zero longitude).

When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?

Description : When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?

Last Answer : Need answer

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse

Description : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

Last Answer : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

The pole star does not seem to move because (a) it is in line with the earth’s axis of rotation (b) it moves around the sun and not the earth (c) its movement can be seen only during a solar eclipse (d) it rotates very rapidly

Description : The pole star does not seem to move because (a) it is in line with the earth’s axis of rotation (b) it moves around the sun and not the earth (c) its movement can be seen only during a solar eclipse (d) it rotates very rapidly

Last Answer : Ans:(a)

What is the rotation of the earth around the sun ?

Description : What is the rotation of the earth around the sun ?

Last Answer : The rotation of the earth around the sun is called annual motion.

If the length of a pendulum is doubled, its frequency of oscillation is changed by a factor of (a) 2 (b) √2 (c) 1/2 (d) 1/4

Description : If the length of a pendulum is doubled, its frequency of oscillation is changed by a factor of (a) 2 (b) √2 (c) 1/2 (d) 1/4

Last Answer : Ans:(c)

. In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A Fn =N √(R/L) B Fn =1/N √(R/L) C Fn =N/2 √(R/L) D Fn =N2 √(R/L)

Description : . In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A Fn =N √(R/L) B Fn =1/N √(R/L) C Fn =N/2 √(R/L) D Fn =N2 √(R/L)

Last Answer : A Fn =N √(R/L)

A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and0.45 Hz in a viscous fluid medium. Find the damping factor. 0.5122 (B) 0.9272 (C) 0.4359 (D) 0.2568

Description : A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and0.45 Hz in a viscous fluid medium. Find the damping factor. 0.5122 (B) 0.9272 (C) 0.4359 (D) 0.2568

Last Answer : (C) 0.4359

A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and 0.45Hz in a viscous fluid medium. Find the damping factor. A 0.5122 B 0.9237 C 0.4359 D 0.2568

Description : A simple pendulum is found to vibrate at a frequency of 0.5Hz in vacuum and 0.45Hz in a viscous fluid medium. Find the damping factor. A 0.5122 B 0.9237 C 0.4359 D 0.2568

Last Answer : C 0.4359

Frequency of centrifugal pendulum absorber is always proportional to A) Oscillating motion B) Transfer motion C) Speed of rotating body D) All of the above

Description : Frequency of centrifugal pendulum absorber is always proportional to A) Oscillating motion B) Transfer motion C) Speed of rotating body D) All of the above

Last Answer : C) Speed of rotating body

In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A) Fn =N √(R/L) B) Fn =1/N √(R/L) C) Fn =N/2 √(R/L) D) Fn =N2 √(R/L)

Description : In centrifugal pendulum absorber , the natural frequency in cycle per second can be given by A) Fn =N √(R/L) B) Fn =1/N √(R/L) C) Fn =N/2 √(R/L) D) Fn =N2 √(R/L)

Last Answer : A) Fn =N √(R/L)

Natural frequency of simple pendulum is proportional to A. Length B. Acceleration due to gravity C. Both D. None

Description : Natural frequency of simple pendulum is proportional to A. Length B. Acceleration due to gravity C. Both D. None

Last Answer : B. Acceleration due to gravity

Energy emitted per second per unit area by Rigal star in Constellation Orion is 17000 times that emited by the sun. What is the surface temperature of

Description : Energy emitted per second per unit area by Rigal star in Constellation Orion is 17000 times that emited by the sun. What is the surface temperature of

Last Answer : Energy emitted per second per unit area by Rigal star in Constellation Orion is 17000 times that emited by ... star if that of the sun is `6000K`?

The radiations emitted by the sun and responsible for the cause of skin cancer

Description : The radiations emitted by the sun and responsible for the cause of skin cancer

Last Answer : Ans. Ultra-violet

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : (3) Nuclear fusion Explanation: The spectrum of the Sun's solar radiation is close to that of a black body with a temperature of about 5,800 K. The Sun emits Electromagnetic radiation across ... converted to lower energy photons before they reach the Sun's surface and are emitted out into space.