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Quiz 24
Mdcat-past-papers - UHS Quiz
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Board: UHS |
461. A low energy neutron has RBE factor of 10. How much energy is absorbed by a man of mass 80kg if the value equivalent dose is 400 rem?
16 J
32 J
48 J
64 J
462. It has been observed that Thorium ⁹⁰Th²³⁴ is transformed into protactinium Pa²³⁴ after the emission of –particle:
Alpha
Beta
Gamma
Alpha, Beta, Gamma
463. The SI unit of equivalent dose is:
Gray
Rad
Mass
Sievert
464. The relation between gray and rad is given as:
0.01
10
0.001
100
465. Which of the following is NOT the somatic biological effect of radiation?
Skin burn
Loss of hair
Induction of cancer
Gene mutation
466. If electron, proton, neutron, and alpha particle have same velocity, which of them has shortest wavelength?
Electron
Proton
Neutron
Alpha particle
467. The process of ejection of loosely bound electrons from a certain photo sensitive surface by absorption of photon is called:
Compton effect
Photoelectric effect
Pair production
Black body radiation
468. In photoelectric effect experiment, the stopping potential is:
The kinetic energy of the most energetic electron ejected
The potential energy of the most energetic electron ejected
The photon energy
The electric potential that causes the electron current to vanish
469. The line spectrum of hydrogen atom contains the spectral lines in the region of:
Ultraviolet
Infrared
Visible
All of these
470. The speed of electron in the first Bohr orbit is:
2.19 × 10⁶ ms⁻¹
2.19 × 10⁶ ms
2.19 × 10⁴ ms⁻¹
2.19 × 10⁻⁴ ms⁻¹
471. The process of ejection of loosely bound electrons from a certain photo sensitive surface by absorption of photon is called?
Compton effect
Photoelectric effect
Pair production
Black body radiation
472. In Compton effect, a photon of a certain wavelength collides with a stationary electron. The wavelength of the emitted photon is:
Longer
Same
Shorter
Infinite
473. The Balmer series of hydrogen is important because it:
Only series that occurs for hydrogen
Is in the visible region
Is of lowest possible quantum number
Greater energy
474. In Compton effect, the incident photon when compared to the scattered photon is of:
Greater energy and momentum
Greater frequency
Greater energy
Equal energy
475. Which of the following is the longest wavelength of radiation for the Paschen series?
187000000 m
0.00000187 m
187000000/m
0.00000187 /m
476. The region ____ which they were passing was known as the Land of Thirst and Death. (Hitch-Hiking Across the Sahara Lesson # 12 Book II)
Through
By
In
From
477. I know how to _________ a throat for inspection. (The Use of Force Lesson # 07 Book I)
Force
Prepare
Expose
Open
478. It is better for me to _______ than to shed the blood of an innocent boy. (Gulistan e Sadi Lesson # 08 Book I)
Died
Die
Had died
Have died
479. The accident happened due to the driver's ____________.
Nuisance
Negligence
Reluctance
Regret
480. They sometimes feel ______________ for the mountains and the sea.
Yearning
Yelling
Yielding
Yapping
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