142380
X-rays are used in determining the molecular structure of crystalline because
1 Its energy is high
2 It can penetrate the material
3 Its wavelength is comparable to interatomic distance
4 Its frequency is low
Explanation:
C X-rays are used in determining the molecular structure of crystalline because X-rays have wavelength similar to the size of atom, they are useful to explore within crystals. The X-ray have wavelength which matches with inter atomic space they are used to resolve the internal structure easily. It possesses high energy and therefore the penetration power would be high.
JIPMER-2011
Dual nature of radiation and Matter
142381
The nature of ions knocked out from hot surface is
1 protons
2 electrons
3 neutrons
4 nuclei
Explanation:
B Ion is an atom or a group of atoms that has lost or gained electrons having negative or positive charge respectively. Thus, ions knocked out from hot surface is electrons.
AIPMT - 1995
Dual nature of radiation and Matter
142383
When intensity of incident light increases
1 Photocurrent increases
2 photocurrent decreases
3 kinetic energy of emitted photoelectrons increases
4 kinetic energy of emitted photoelectrons decreases
Explanation:
A On increasing the intensity of incident light, the number of photons increase in incident light. When the number of incident photons increases then the number of emitted photo electrons also increases. Therefore, the photo electric current increases.
NEET Test Series from KOTA - 10 Papers In MS WORD
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Dual nature of radiation and Matter
142380
X-rays are used in determining the molecular structure of crystalline because
1 Its energy is high
2 It can penetrate the material
3 Its wavelength is comparable to interatomic distance
4 Its frequency is low
Explanation:
C X-rays are used in determining the molecular structure of crystalline because X-rays have wavelength similar to the size of atom, they are useful to explore within crystals. The X-ray have wavelength which matches with inter atomic space they are used to resolve the internal structure easily. It possesses high energy and therefore the penetration power would be high.
JIPMER-2011
Dual nature of radiation and Matter
142381
The nature of ions knocked out from hot surface is
1 protons
2 electrons
3 neutrons
4 nuclei
Explanation:
B Ion is an atom or a group of atoms that has lost or gained electrons having negative or positive charge respectively. Thus, ions knocked out from hot surface is electrons.
AIPMT - 1995
Dual nature of radiation and Matter
142383
When intensity of incident light increases
1 Photocurrent increases
2 photocurrent decreases
3 kinetic energy of emitted photoelectrons increases
4 kinetic energy of emitted photoelectrons decreases
Explanation:
A On increasing the intensity of incident light, the number of photons increase in incident light. When the number of incident photons increases then the number of emitted photo electrons also increases. Therefore, the photo electric current increases.
142380
X-rays are used in determining the molecular structure of crystalline because
1 Its energy is high
2 It can penetrate the material
3 Its wavelength is comparable to interatomic distance
4 Its frequency is low
Explanation:
C X-rays are used in determining the molecular structure of crystalline because X-rays have wavelength similar to the size of atom, they are useful to explore within crystals. The X-ray have wavelength which matches with inter atomic space they are used to resolve the internal structure easily. It possesses high energy and therefore the penetration power would be high.
JIPMER-2011
Dual nature of radiation and Matter
142381
The nature of ions knocked out from hot surface is
1 protons
2 electrons
3 neutrons
4 nuclei
Explanation:
B Ion is an atom or a group of atoms that has lost or gained electrons having negative or positive charge respectively. Thus, ions knocked out from hot surface is electrons.
AIPMT - 1995
Dual nature of radiation and Matter
142383
When intensity of incident light increases
1 Photocurrent increases
2 photocurrent decreases
3 kinetic energy of emitted photoelectrons increases
4 kinetic energy of emitted photoelectrons decreases
Explanation:
A On increasing the intensity of incident light, the number of photons increase in incident light. When the number of incident photons increases then the number of emitted photo electrons also increases. Therefore, the photo electric current increases.