Two objects of mass \(10\) kg and \(20\) kg respectively are connected to the two ends of a rigid rod of length \(10\) m with negligible mass. The distance of the center of mass of the system from the \(10\) kg mass is:
1. \(5\) m
2. \(\frac{10}{3} \mathrm{~m}\)
3. \(\frac{20}{3} \mathrm{~m}\)
4. \(10\) m
1. \(5\) m
2. \(\frac{10}{3} \mathrm{~m}\)
3. \(\frac{20}{3} \mathrm{~m}\)
4. \(10\) m
Subtopic: Center of Mass |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch List - I with List - II.
Choose the correct answer from the options given below:
| List -I (Electromagnetic waves) | List - II (Wavelength) |
| (a) AM radio waves | (i) \(10^{-10}~\mathrm{m}\) |
| (b) Microwaves | (ii) \(10^{2} \mathrm{~m}\) |
| (c) Infrared radiations | (iii) \(10^{-2} \mathrm{~m}\) |
| (d) X-rays | (iv) \(10^{-4} \mathrm{~m}\) |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (iii) | (iv) | (ii) | (i) |
Subtopic: Electromagnetic Spectrum |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe energy that will be ideally radiated by a \(100\) kW transmitter in \(1\) hour is:
1. \(1\times 10^{5}\) J
2. \(36\times 10^{7}\) J
3. \(36\times 10^{4}\) J
4. \(36\times 10^{5}\) J
1. \(1\times 10^{5}\) J
2. \(36\times 10^{7}\) J
3. \(36\times 10^{4}\) J
4. \(36\times 10^{5}\) J
Subtopic: Power |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology An ideal gas undergoes four different processes from the same initial state as shown in the figure below. Those processes are adiabatic, isothermal, isobaric, and isochoric. The curve which represents the adiabatic process among \(1,\) \(2,\) \(3\) and \(4\) is:
1. \(4\)
2. \(1\)
3. \(2\)
4. \(3\)
1. \(4\)
2. \(1\)
3. \(2\)
4. \(3\)
Subtopic: Types of Processes |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPlane angle and solid angle have:
| 1. | both units and dimensions |
| 2. | units but no dimensions |
| 3. | dimensions but no units |
| 4. | no units and no dimensions |
Subtopic: Dimensions |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn half-wave rectification, if the input frequency is \(60\) Hz, then the output frequency would be:
1. \(120\) Hz
2. zero
3. \(30\) Hz
4. \(60\) Hz
1. \(120\) Hz
2. zero
3. \(30\) Hz
4. \(60\) Hz
Subtopic: Rectifier |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen two monochromatic lights of frequency, \(\nu\) and \(\frac{\nu}{2}\) are incident on a photoelectric metal, their stopping potential becomes \(\frac{V_{s}}{2}\) and \(V_s\), respectively. The threshold frequency for this metal is:
1. \(\frac{3}{2} \nu\)
2. 2\(\nu\)
3. 3\(\nu\)
4. \(\frac{2}{3} \nu\)
1. \(\frac{3}{2} \nu\)
2. 2\(\nu\)
3. 3\(\nu\)
4. \(\frac{2}{3} \nu\)
Subtopic: Einstein's Photoelectric Equation |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe displacement-time graphs of two moving particles make angles of \(30^\circ\) and \(45^\circ\) with the x-axis as shown in the figure. The ratio of their respective velocity is:
1. \(1: \sqrt{3}\)
2.\(\sqrt{3}: 1\)
3. \(1:1\)
4. \(1:2\)
1. \(1: \sqrt{3}\)
2.\(\sqrt{3}: 1\)
3. \(1:1\)
4. \(1:2\)
Subtopic: Graphs |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe dimensions [MLT-2A-2] belong to the:
1. electric permittivity
2. magnetic flux
3. self-inductance
4. magnetic permeability
1. electric permittivity
2. magnetic flux
3. self-inductance
4. magnetic permeability
Subtopic: Dimensions |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe peak voltage of the ac source is equal to:
1.\(1 / \sqrt{2}\) times the rms value of the ac source
2. the value of voltage supplied to the circuit
3. the rms value of the ac source
4. \(\sqrt{2}\) times the rms value of the ac source
1.\(1 / \sqrt{2}\) times the rms value of the ac source
2. the value of voltage supplied to the circuit
3. the rms value of the ac source
4. \(\sqrt{2}\) times the rms value of the ac source
Subtopic: RMS & Average Values |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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