A ball is projected from point \(A\) with velocity \(20\) ms–1 at an angle \(60^\circ\) to the horizontal direction. At the highest point \(B\) of the path (as shown in figure), the velocity \(v\) (in ms–1) of the ball will be:
| 1. | \(20\) | 2. | \(10\sqrt3\) |
| 3. | zero | 4. | \(10\) |
Subtopic: Projectile Motion |
71%
Level 2: 60%+
NEET - 2023
Hints
Which of the following statements is not true?
| 1. | The coefficient of viscosity is a scalar quantity. |
| 2. | Surface tension is a scalar quantity. |
| 3. | Pressure is a vector quantity. |
| 4. | Relative density is a scalar quantity. |
Subtopic: Pressure |
72%
Level 2: 60%+
NEET - 2023
Hints
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron:
| 1. | will turn towards right of direction of motion |
| 2. | will turn towards left of direction of motion |
| 3. | speed will decrease |
| 4. | speed will increase |
Subtopic: Lorentz Force |
65%
Level 2: 60%+
NEET - 2023
Hints
A horizontal ray of light is incident on the right-angled prism with prism angle \(6^\circ.\) If the refractive index of the material of the prism is \(1.5,\) then the angle of emergence will be:
| 1. | \(9^\circ\) | 2. | \(10^\circ\) |
| 3. | \(4^\circ\) | 4. | \(6^\circ\) |
Subtopic: Prisms |
64%
Level 2: 60%+
NEET - 2023
Hints
A \(\mathrm{p} \text-\)type extrinsic semiconductor is obtained when Germanium is doped with:
1. antimony
2. phosphorous
3. arsenic
4. boron
1. antimony
2. phosphorous
3. arsenic
4. boron
Subtopic: Types of Semiconductors |
76%
Level 2: 60%+
NEET - 2023
Hints
Which set of colours would be observed in the air under the conditions depicted in the figure?
| 1. | yellow, orange, and red | 2. | blue, green, and yellow |
| 3. | orange, red, and violet | 4. | all of the above |
Subtopic: Total Internal Reflection |
77%
Level 2: 60%+
NEET - 2023
Hints
If \(Z_1\) and \(Z_2\) are the impedances of the given circuits \(\mathrm{(a)}\) and \(\mathrm{(b)}\) as shown in the figures, then choose the correct option:
| 1. | \(Z_1<Z_2\) | 2. | \(Z_1+Z_2=20~\Omega\) |
| 3. | \(Z_1=Z_2\) | 4. | \(Z_1>Z_2\) |
Subtopic: Different Types of AC Circuits |
67%
Level 2: 60%+
NEET - 2023
Hints
The wavelength of the Lyman series of hydrogen atom appears in:
| 1. | visible region |
| 2. | far infrared region |
| 3. | ultraviolet region |
| 4. | infrared region |
Subtopic: Spectral Series |
82%
Level 1: 80%+
NEET - 2023
Hints
The above figure shows the circuit symbol of a transistor. Select the correct statements given below:
| (A) | The transistor has two segments of p-type semiconductor separated by a segment of n-type semiconductor. |
| (B) | The emitter is of moderate size and heavily doped. |
| (C) | The central segment is thin and lightly doped. |
| (D) | The emitter base junction is reverse biased in common emitter amplifier circuit. |
| 1. | (C) and (D) |
| 2. | (A) and (D) |
| 3. | (A) and (B) |
| 4. | (B) and (C) |
Level 3: 35%-60%
NEET - 2023
Hints
The de-Broglie wavelength associated with an electron, accelerated by a potential difference of \(81\) V is given by:
1. \(13.6\) nm
2. \(136\) nm
3. \(1.36\) nm
4. \(0.136\) nm
1. \(13.6\) nm
2. \(136\) nm
3. \(1.36\) nm
4. \(0.136\) nm
Subtopic: De-broglie Wavelength |
58%
Level 3: 35%-60%
NEET - 2023
Hints
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