A force defined by; \(F = \alpha t^2 + \beta t\) acts on a particle at a given time \(t.\) The factor which is dimensionless, if \(\alpha\) and \(\beta\) are constants, is:
1.
\(\alpha t / \beta \)
2.
\(\alpha \beta t \)
3.
\(\alpha \beta / t \)
4.
\(\beta t / \alpha\)
Subtopic: Dimensions |
66%
Level 2: 60%+
NEET - 2024
Hints
A \(10~\mu\text F\) capacitor is connected to a \(210~\text V,50~\text{Hz}\) source as shown in the figure. The peak current in the circuit is nearly \((\pi = 3.14)\):
| 1. | \(0.93~\text A\) | 2. | \(1.20~\text A\) |
| 3. | \(0.35~\text A\) | 4. | \(0.58~\text A\) |
Subtopic: RMS & Average Values |
56%
Level 3: 35%-60%
NEET - 2024
Hints
A metallic bar of Young's modulus \(0.5 \times 10^{11}~\text{Nm}^{-2},\) coefficient of linear thermal expansion \(10^{-5} ~^{\circ}\text{C}^{-1},\) length \(1~\text m\) and cross-sectional area \(10^{-3} ~\text{m}^2\) is heated from \(0^\circ \text{C}\) to \(100^\circ \text C\) without expansion or bending. The compressive force developed in the metallic bar is:
| 1. | \(50 \times 10^3~ \text N\) | 2. | \(100 \times 10^3 ~\text N\) |
| 3. | \(2 \times 10^3~\text N\) | 4. | \(5 \times 10^3 ~\text N\) |
Subtopic: Thermal Stress |
72%
Level 2: 60%+
NEET - 2024
Hints
A parallel plate capacitor is charged by connecting it to a battery through a resistor. If \(i\) is the current in the circuit, then in the gap between the plates:
| 1. | A displacement current of magnitude equal to \(i\) flows in the same direction as \(i.\) |
| 2. | A displacement current of magnitude equal to \(i\) flows in the opposite direction to \(i.\) |
| 3. | A displacement current of magnitude greater than \(i\) flows but it can be in any direction. |
| 4. | There is no current. |
Subtopic: Displacement Current |
63%
Level 2: 60%+
NEET - 2024
Hints
Subtopic: PN junction |
Level 3: 35%-60%
NEET - 2024
Hints
A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to:
Choose the correct statement\((\mathrm s )\) from the options given below:
| A. | hold the sheet there if it is magnetic. |
| B. | hold the sheet there if it is non-magnetic. |
| C. | move the sheet away from the pole with uniform velocity if it is conducting. |
| D. | move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar. |
| 1. | A and C only | 2. | A, C and D only |
| 3. | C only | 4. | B and D only |
Subtopic: Magnetic Materials |
55%
Level 3: 35%-60%
NEET - 2024
Hints
If the plates of a parallel plate capacitor connected to a battery are moved closer to each other, then:
Choose the most appropriate answer from the options given below:
| (A) | The charge stored in it increases. |
| (B) | The energy stored in it decreases. |
| (C) | Its capacitance increases. |
| (D) | The ratio of charge to its potential remains the same. |
| (E) | The product of charge and voltage increases. |
| 1. | (A), (C) and (E) only |
| 2. | (B), (D) and (E) only |
| 3. | (A), (B) and (C) only |
| 4. | (A), (B) and (E) only |
Subtopic: Energy stored in Capacitor |
60%
Level 2: 60%+
NEET - 2024
Hints
The following graph represents the \(T\text -V\) curves of an ideal gas (where \(T\) is the temperature and \(V\) the volume) at three pressures \(P_1, P_2\) and \(P_3\) compared with those of Charles's law represented as dotted lines.
Then the correct relation is:
Then the correct relation is:
| 1. | \(P_1>P_3>P_2 \) | 2. | \(P_2>P_1>P_3 \) |
| 3. | \( P_1>P_2>P_3\) | 4. | \(P_3 > P_2>P_1\) |
Subtopic: Ideal Gas Equation |
68%
Level 2: 60%+
NEET - 2024
Hints
The property which is not of an electromagnetic wave travelling in free space is that:
| 1. | the energy density in electric field is equal to energy density in magnetic field. |
| 2. | they travel with a speed equal to \(\dfrac{1}{\sqrt{\mu_0~ \varepsilon_0}} .\) |
| 3. | they originate from charges moving with uniform speed. |
| 4. | they are transverse in nature. |
Subtopic: Properties of EM Waves |
68%
Level 2: 60%+
NEET - 2024
Hints
An iron bar of length \( L\) has a magnetic moment \(M.\) It is bent at the middle of its length such that the two arms make an angle \(60^\circ\) with each other. The magnetic moment of this new magnet is:
| 1. | \(\dfrac{M}{2}\) | 2. | \({2 M}\) |
| 3. | \(\dfrac{{M}}{\sqrt{3}}\) | 4. | \(M\) |
Subtopic: Bar Magnet |
54%
Level 3: 35%-60%
NEET - 2024
Hints
© 2026 GoodEd Technologies Pvt. Ltd.