142673
An object of mass \(1 \mathrm{~kg}\) has energy content of
1 \(1000 \mathrm{~J}\)
2 \(9 \times 10^{16} \mathrm{~J}\)
3 \(3 \times 10^8 \mathrm{~J}\)
4 \(1 \mathrm{~J}\)
Explanation:
B Given, mass (m) \(=1 \mathrm{~kg}\) From Einstein equation \(\mathrm{E}=\mathrm{mc}^2\) \(\mathrm{E}=1 \times\left(3 \times 10^8\right)^2\) \(\mathrm{E}=9 \times 10^{16} \mathrm{~J}\)
J and K CET- 1998
Dual nature of radiation and Matter
142667
The book "Pisces of Physics" has been written by
1 Newton
2 Einstein
3 Archimedes
4 Galileo
Explanation:
B The book " Pisces of physics has been written by Einstein.
Shift-II
Dual nature of radiation and Matter
142655
The scientific principle involved in 'Laser' is 一.
1 Newton's laws of motion
2 Faraday's laws of induction
3 Motion of a charged particle in an electromagnetic field
4 Amplification by population inversion
Explanation:
D Electron in the ground state absorb energy from photons to jump into the higher energy level then spontaneous emission occurs in which electrons in the excited state return to the ground state by emitting photons. stimulated emission occurs at last in which incident photon interacts with the excited electron and force it to return to the ground state.
Shift-I
Dual nature of radiation and Matter
142660
In ruby laser, some of aluminium ions are \(\left(\mathrm{Al}^{3+}\right)\) replaced by:
1 Copper ions \(\left(\mathrm{Cu}^{3+}\right)\)
2 Chromium ions \(\left(\mathrm{Cr}^{3+}\right)\)
3 Calcium ions \(\left(\mathrm{Ca}^{3+}\right)\)
4 None
Explanation:
B Ruby laser is the first working laser that was invented by T.H. Maima in 1960. It is a three level solid state pulsed laser that uses a synthetic ruby crystal or sapphire \(\left(\mathrm{Al}_2 \mathrm{O}_3\right)\) as it gain medium and triply ionized chromium \(\left(\mathrm{Cr}^{+}\right)\)is used as a dopant.
SRMJEEE-2017
Dual nature of radiation and Matter
142661
A laser beam is used for carrying out surgery because it
1 is highly monochromatic
2 is highly coherent
3 is highly directional
4 can be sharply focused
Explanation:
D A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Precise cutting of tissue is possible in laser surgery, as the laser beam can be sharply focussed.
142673
An object of mass \(1 \mathrm{~kg}\) has energy content of
1 \(1000 \mathrm{~J}\)
2 \(9 \times 10^{16} \mathrm{~J}\)
3 \(3 \times 10^8 \mathrm{~J}\)
4 \(1 \mathrm{~J}\)
Explanation:
B Given, mass (m) \(=1 \mathrm{~kg}\) From Einstein equation \(\mathrm{E}=\mathrm{mc}^2\) \(\mathrm{E}=1 \times\left(3 \times 10^8\right)^2\) \(\mathrm{E}=9 \times 10^{16} \mathrm{~J}\)
J and K CET- 1998
Dual nature of radiation and Matter
142667
The book "Pisces of Physics" has been written by
1 Newton
2 Einstein
3 Archimedes
4 Galileo
Explanation:
B The book " Pisces of physics has been written by Einstein.
Shift-II
Dual nature of radiation and Matter
142655
The scientific principle involved in 'Laser' is 一.
1 Newton's laws of motion
2 Faraday's laws of induction
3 Motion of a charged particle in an electromagnetic field
4 Amplification by population inversion
Explanation:
D Electron in the ground state absorb energy from photons to jump into the higher energy level then spontaneous emission occurs in which electrons in the excited state return to the ground state by emitting photons. stimulated emission occurs at last in which incident photon interacts with the excited electron and force it to return to the ground state.
Shift-I
Dual nature of radiation and Matter
142660
In ruby laser, some of aluminium ions are \(\left(\mathrm{Al}^{3+}\right)\) replaced by:
1 Copper ions \(\left(\mathrm{Cu}^{3+}\right)\)
2 Chromium ions \(\left(\mathrm{Cr}^{3+}\right)\)
3 Calcium ions \(\left(\mathrm{Ca}^{3+}\right)\)
4 None
Explanation:
B Ruby laser is the first working laser that was invented by T.H. Maima in 1960. It is a three level solid state pulsed laser that uses a synthetic ruby crystal or sapphire \(\left(\mathrm{Al}_2 \mathrm{O}_3\right)\) as it gain medium and triply ionized chromium \(\left(\mathrm{Cr}^{+}\right)\)is used as a dopant.
SRMJEEE-2017
Dual nature of radiation and Matter
142661
A laser beam is used for carrying out surgery because it
1 is highly monochromatic
2 is highly coherent
3 is highly directional
4 can be sharply focused
Explanation:
D A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Precise cutting of tissue is possible in laser surgery, as the laser beam can be sharply focussed.
142673
An object of mass \(1 \mathrm{~kg}\) has energy content of
1 \(1000 \mathrm{~J}\)
2 \(9 \times 10^{16} \mathrm{~J}\)
3 \(3 \times 10^8 \mathrm{~J}\)
4 \(1 \mathrm{~J}\)
Explanation:
B Given, mass (m) \(=1 \mathrm{~kg}\) From Einstein equation \(\mathrm{E}=\mathrm{mc}^2\) \(\mathrm{E}=1 \times\left(3 \times 10^8\right)^2\) \(\mathrm{E}=9 \times 10^{16} \mathrm{~J}\)
J and K CET- 1998
Dual nature of radiation and Matter
142667
The book "Pisces of Physics" has been written by
1 Newton
2 Einstein
3 Archimedes
4 Galileo
Explanation:
B The book " Pisces of physics has been written by Einstein.
Shift-II
Dual nature of radiation and Matter
142655
The scientific principle involved in 'Laser' is 一.
1 Newton's laws of motion
2 Faraday's laws of induction
3 Motion of a charged particle in an electromagnetic field
4 Amplification by population inversion
Explanation:
D Electron in the ground state absorb energy from photons to jump into the higher energy level then spontaneous emission occurs in which electrons in the excited state return to the ground state by emitting photons. stimulated emission occurs at last in which incident photon interacts with the excited electron and force it to return to the ground state.
Shift-I
Dual nature of radiation and Matter
142660
In ruby laser, some of aluminium ions are \(\left(\mathrm{Al}^{3+}\right)\) replaced by:
1 Copper ions \(\left(\mathrm{Cu}^{3+}\right)\)
2 Chromium ions \(\left(\mathrm{Cr}^{3+}\right)\)
3 Calcium ions \(\left(\mathrm{Ca}^{3+}\right)\)
4 None
Explanation:
B Ruby laser is the first working laser that was invented by T.H. Maima in 1960. It is a three level solid state pulsed laser that uses a synthetic ruby crystal or sapphire \(\left(\mathrm{Al}_2 \mathrm{O}_3\right)\) as it gain medium and triply ionized chromium \(\left(\mathrm{Cr}^{+}\right)\)is used as a dopant.
SRMJEEE-2017
Dual nature of radiation and Matter
142661
A laser beam is used for carrying out surgery because it
1 is highly monochromatic
2 is highly coherent
3 is highly directional
4 can be sharply focused
Explanation:
D A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Precise cutting of tissue is possible in laser surgery, as the laser beam can be sharply focussed.
142673
An object of mass \(1 \mathrm{~kg}\) has energy content of
1 \(1000 \mathrm{~J}\)
2 \(9 \times 10^{16} \mathrm{~J}\)
3 \(3 \times 10^8 \mathrm{~J}\)
4 \(1 \mathrm{~J}\)
Explanation:
B Given, mass (m) \(=1 \mathrm{~kg}\) From Einstein equation \(\mathrm{E}=\mathrm{mc}^2\) \(\mathrm{E}=1 \times\left(3 \times 10^8\right)^2\) \(\mathrm{E}=9 \times 10^{16} \mathrm{~J}\)
J and K CET- 1998
Dual nature of radiation and Matter
142667
The book "Pisces of Physics" has been written by
1 Newton
2 Einstein
3 Archimedes
4 Galileo
Explanation:
B The book " Pisces of physics has been written by Einstein.
Shift-II
Dual nature of radiation and Matter
142655
The scientific principle involved in 'Laser' is 一.
1 Newton's laws of motion
2 Faraday's laws of induction
3 Motion of a charged particle in an electromagnetic field
4 Amplification by population inversion
Explanation:
D Electron in the ground state absorb energy from photons to jump into the higher energy level then spontaneous emission occurs in which electrons in the excited state return to the ground state by emitting photons. stimulated emission occurs at last in which incident photon interacts with the excited electron and force it to return to the ground state.
Shift-I
Dual nature of radiation and Matter
142660
In ruby laser, some of aluminium ions are \(\left(\mathrm{Al}^{3+}\right)\) replaced by:
1 Copper ions \(\left(\mathrm{Cu}^{3+}\right)\)
2 Chromium ions \(\left(\mathrm{Cr}^{3+}\right)\)
3 Calcium ions \(\left(\mathrm{Ca}^{3+}\right)\)
4 None
Explanation:
B Ruby laser is the first working laser that was invented by T.H. Maima in 1960. It is a three level solid state pulsed laser that uses a synthetic ruby crystal or sapphire \(\left(\mathrm{Al}_2 \mathrm{O}_3\right)\) as it gain medium and triply ionized chromium \(\left(\mathrm{Cr}^{+}\right)\)is used as a dopant.
SRMJEEE-2017
Dual nature of radiation and Matter
142661
A laser beam is used for carrying out surgery because it
1 is highly monochromatic
2 is highly coherent
3 is highly directional
4 can be sharply focused
Explanation:
D A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Precise cutting of tissue is possible in laser surgery, as the laser beam can be sharply focussed.
142673
An object of mass \(1 \mathrm{~kg}\) has energy content of
1 \(1000 \mathrm{~J}\)
2 \(9 \times 10^{16} \mathrm{~J}\)
3 \(3 \times 10^8 \mathrm{~J}\)
4 \(1 \mathrm{~J}\)
Explanation:
B Given, mass (m) \(=1 \mathrm{~kg}\) From Einstein equation \(\mathrm{E}=\mathrm{mc}^2\) \(\mathrm{E}=1 \times\left(3 \times 10^8\right)^2\) \(\mathrm{E}=9 \times 10^{16} \mathrm{~J}\)
J and K CET- 1998
Dual nature of radiation and Matter
142667
The book "Pisces of Physics" has been written by
1 Newton
2 Einstein
3 Archimedes
4 Galileo
Explanation:
B The book " Pisces of physics has been written by Einstein.
Shift-II
Dual nature of radiation and Matter
142655
The scientific principle involved in 'Laser' is 一.
1 Newton's laws of motion
2 Faraday's laws of induction
3 Motion of a charged particle in an electromagnetic field
4 Amplification by population inversion
Explanation:
D Electron in the ground state absorb energy from photons to jump into the higher energy level then spontaneous emission occurs in which electrons in the excited state return to the ground state by emitting photons. stimulated emission occurs at last in which incident photon interacts with the excited electron and force it to return to the ground state.
Shift-I
Dual nature of radiation and Matter
142660
In ruby laser, some of aluminium ions are \(\left(\mathrm{Al}^{3+}\right)\) replaced by:
1 Copper ions \(\left(\mathrm{Cu}^{3+}\right)\)
2 Chromium ions \(\left(\mathrm{Cr}^{3+}\right)\)
3 Calcium ions \(\left(\mathrm{Ca}^{3+}\right)\)
4 None
Explanation:
B Ruby laser is the first working laser that was invented by T.H. Maima in 1960. It is a three level solid state pulsed laser that uses a synthetic ruby crystal or sapphire \(\left(\mathrm{Al}_2 \mathrm{O}_3\right)\) as it gain medium and triply ionized chromium \(\left(\mathrm{Cr}^{+}\right)\)is used as a dopant.
SRMJEEE-2017
Dual nature of radiation and Matter
142661
A laser beam is used for carrying out surgery because it
1 is highly monochromatic
2 is highly coherent
3 is highly directional
4 can be sharply focused
Explanation:
D A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Precise cutting of tissue is possible in laser surgery, as the laser beam can be sharply focussed.
