FST 2
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TEST SERIES (PHYSICS FST)

263928 The focal length of the objective and eye-piece of a telescope are res pectively 200 cm and 5 cm . The maximum magnifying power of the teles cope will be:

1 -100
2 -60
3 -48
4 -40
**NCERT-XII-II-244**
TEST SERIES (PHYSICS FST)

263929 In hydrogen atom spectrum frequency of \(2.7 \times 10^{15} \mathrm{~Hz}\) of electromagnetic wave is emitted when transition takes place from \(n=2\) to \(n=1\). If it moves from \(\mathbf{n}=3\) to \(\mathbf{n}=\mathbf{1}\), the frequency emitted will be:

1 \(3.2 \times 10^{15} \mathrm{~Hz}\)
2 \(32 \times 10^{15} \mathrm{~Hz}\)
3 \(1.6 \times 10^{15} \mathrm{~Hz}\)
4 \(16 \times 10^{15} \mathrm{~Hz}\)
**NCERT-XII-II-301**
TEST SERIES (PHYSICS FST)

263930 The energy of an electron in an excited hydrogen atom is -3.4 eV . Its angular momentum is:

1 \(3.72 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
2 \(2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
3 \(1.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
4 \(1.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
**NCERT-XII-II-299**
TEST SERIES (PHYSICS FST)

263931 The electron in the hydrogen atom jumps from exited state \((n=3)\) to ground state \((n=1)\) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV , the stopping potential is estimated to be: the energy of the electron in nth state \(E_n=\frac{13.6}{n^2} e V\) :

1 5.1 V
2 12.1 V
3 17.2 V
4 7 V
**NCERT-XIIIII-282**
TEST SERIES (PHYSICS FST)

263932 If \(\bar{a}, \bar{b}, \bar{c}\) are three unit vectors such that \(\vec{a}+\vec{b}+\vec{c}=0\) then \(\vec{a} \vec{b}+\vec{b} . \vec{c}+\vec{c} \cdot \vec{a}\) is equal to:

1 -1
2 3
3 0
4 \(-3 / 2\)
**NCERT-XI-I-72**
NEET DIGITAL LIBRARY
TEST SERIES (PHYSICS FST)

263928 The focal length of the objective and eye-piece of a telescope are res pectively 200 cm and 5 cm . The maximum magnifying power of the teles cope will be:

1 -100
2 -60
3 -48
4 -40
**NCERT-XII-II-244**
TEST SERIES (PHYSICS FST)

263929 In hydrogen atom spectrum frequency of \(2.7 \times 10^{15} \mathrm{~Hz}\) of electromagnetic wave is emitted when transition takes place from \(n=2\) to \(n=1\). If it moves from \(\mathbf{n}=3\) to \(\mathbf{n}=\mathbf{1}\), the frequency emitted will be:

1 \(3.2 \times 10^{15} \mathrm{~Hz}\)
2 \(32 \times 10^{15} \mathrm{~Hz}\)
3 \(1.6 \times 10^{15} \mathrm{~Hz}\)
4 \(16 \times 10^{15} \mathrm{~Hz}\)
**NCERT-XII-II-301**
TEST SERIES (PHYSICS FST)

263930 The energy of an electron in an excited hydrogen atom is -3.4 eV . Its angular momentum is:

1 \(3.72 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
2 \(2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
3 \(1.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
4 \(1.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
**NCERT-XII-II-299**
TEST SERIES (PHYSICS FST)

263931 The electron in the hydrogen atom jumps from exited state \((n=3)\) to ground state \((n=1)\) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV , the stopping potential is estimated to be: the energy of the electron in nth state \(E_n=\frac{13.6}{n^2} e V\) :

1 5.1 V
2 12.1 V
3 17.2 V
4 7 V
**NCERT-XIIIII-282**
TEST SERIES (PHYSICS FST)

263932 If \(\bar{a}, \bar{b}, \bar{c}\) are three unit vectors such that \(\vec{a}+\vec{b}+\vec{c}=0\) then \(\vec{a} \vec{b}+\vec{b} . \vec{c}+\vec{c} \cdot \vec{a}\) is equal to:

1 -1
2 3
3 0
4 \(-3 / 2\)
**NCERT-XI-I-72**
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TEST SERIES (PHYSICS FST)

263928 The focal length of the objective and eye-piece of a telescope are res pectively 200 cm and 5 cm . The maximum magnifying power of the teles cope will be:

1 -100
2 -60
3 -48
4 -40
**NCERT-XII-II-244**
TEST SERIES (PHYSICS FST)

263929 In hydrogen atom spectrum frequency of \(2.7 \times 10^{15} \mathrm{~Hz}\) of electromagnetic wave is emitted when transition takes place from \(n=2\) to \(n=1\). If it moves from \(\mathbf{n}=3\) to \(\mathbf{n}=\mathbf{1}\), the frequency emitted will be:

1 \(3.2 \times 10^{15} \mathrm{~Hz}\)
2 \(32 \times 10^{15} \mathrm{~Hz}\)
3 \(1.6 \times 10^{15} \mathrm{~Hz}\)
4 \(16 \times 10^{15} \mathrm{~Hz}\)
**NCERT-XII-II-301**
TEST SERIES (PHYSICS FST)

263930 The energy of an electron in an excited hydrogen atom is -3.4 eV . Its angular momentum is:

1 \(3.72 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
2 \(2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
3 \(1.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
4 \(1.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
**NCERT-XII-II-299**
TEST SERIES (PHYSICS FST)

263931 The electron in the hydrogen atom jumps from exited state \((n=3)\) to ground state \((n=1)\) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV , the stopping potential is estimated to be: the energy of the electron in nth state \(E_n=\frac{13.6}{n^2} e V\) :

1 5.1 V
2 12.1 V
3 17.2 V
4 7 V
**NCERT-XIIIII-282**
TEST SERIES (PHYSICS FST)

263932 If \(\bar{a}, \bar{b}, \bar{c}\) are three unit vectors such that \(\vec{a}+\vec{b}+\vec{c}=0\) then \(\vec{a} \vec{b}+\vec{b} . \vec{c}+\vec{c} \cdot \vec{a}\) is equal to:

1 -1
2 3
3 0
4 \(-3 / 2\)
**NCERT-XI-I-72**
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
TEST SERIES (PHYSICS FST)

263928 The focal length of the objective and eye-piece of a telescope are res pectively 200 cm and 5 cm . The maximum magnifying power of the teles cope will be:

1 -100
2 -60
3 -48
4 -40
**NCERT-XII-II-244**
TEST SERIES (PHYSICS FST)

263929 In hydrogen atom spectrum frequency of \(2.7 \times 10^{15} \mathrm{~Hz}\) of electromagnetic wave is emitted when transition takes place from \(n=2\) to \(n=1\). If it moves from \(\mathbf{n}=3\) to \(\mathbf{n}=\mathbf{1}\), the frequency emitted will be:

1 \(3.2 \times 10^{15} \mathrm{~Hz}\)
2 \(32 \times 10^{15} \mathrm{~Hz}\)
3 \(1.6 \times 10^{15} \mathrm{~Hz}\)
4 \(16 \times 10^{15} \mathrm{~Hz}\)
**NCERT-XII-II-301**
TEST SERIES (PHYSICS FST)

263930 The energy of an electron in an excited hydrogen atom is -3.4 eV . Its angular momentum is:

1 \(3.72 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
2 \(2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
3 \(1.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
4 \(1.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
**NCERT-XII-II-299**
TEST SERIES (PHYSICS FST)

263931 The electron in the hydrogen atom jumps from exited state \((n=3)\) to ground state \((n=1)\) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV , the stopping potential is estimated to be: the energy of the electron in nth state \(E_n=\frac{13.6}{n^2} e V\) :

1 5.1 V
2 12.1 V
3 17.2 V
4 7 V
**NCERT-XIIIII-282**
TEST SERIES (PHYSICS FST)

263932 If \(\bar{a}, \bar{b}, \bar{c}\) are three unit vectors such that \(\vec{a}+\vec{b}+\vec{c}=0\) then \(\vec{a} \vec{b}+\vec{b} . \vec{c}+\vec{c} \cdot \vec{a}\) is equal to:

1 -1
2 3
3 0
4 \(-3 / 2\)
**NCERT-XI-I-72**
NEET DIGITAL LIBRARY
TEST SERIES (PHYSICS FST)

263928 The focal length of the objective and eye-piece of a telescope are res pectively 200 cm and 5 cm . The maximum magnifying power of the teles cope will be:

1 -100
2 -60
3 -48
4 -40
**NCERT-XII-II-244**
TEST SERIES (PHYSICS FST)

263929 In hydrogen atom spectrum frequency of \(2.7 \times 10^{15} \mathrm{~Hz}\) of electromagnetic wave is emitted when transition takes place from \(n=2\) to \(n=1\). If it moves from \(\mathbf{n}=3\) to \(\mathbf{n}=\mathbf{1}\), the frequency emitted will be:

1 \(3.2 \times 10^{15} \mathrm{~Hz}\)
2 \(32 \times 10^{15} \mathrm{~Hz}\)
3 \(1.6 \times 10^{15} \mathrm{~Hz}\)
4 \(16 \times 10^{15} \mathrm{~Hz}\)
**NCERT-XII-II-301**
TEST SERIES (PHYSICS FST)

263930 The energy of an electron in an excited hydrogen atom is -3.4 eV . Its angular momentum is:

1 \(3.72 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
2 \(2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
3 \(1.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
4 \(1.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}\)
**NCERT-XII-II-299**
TEST SERIES (PHYSICS FST)

263931 The electron in the hydrogen atom jumps from exited state \((n=3)\) to ground state \((n=1)\) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is 5.1 eV , the stopping potential is estimated to be: the energy of the electron in nth state \(E_n=\frac{13.6}{n^2} e V\) :

1 5.1 V
2 12.1 V
3 17.2 V
4 7 V
**NCERT-XIIIII-282**
TEST SERIES (PHYSICS FST)

263932 If \(\bar{a}, \bar{b}, \bar{c}\) are three unit vectors such that \(\vec{a}+\vec{b}+\vec{c}=0\) then \(\vec{a} \vec{b}+\vec{b} . \vec{c}+\vec{c} \cdot \vec{a}\) is equal to:

1 -1
2 3
3 0
4 \(-3 / 2\)
**NCERT-XI-I-72**