PU Entry Test Past Papers

In young double slit experiments. The position of bright fringe is given by?

1. y= mλD ​/d
2. 𝑦 = 𝑑 𝜆/ 𝐷
3. 𝑦 = 𝐷 /𝜆 𝑑
4. 𝑦 = 𝑑 /𝜆 𝐷

The force acting on the current carrying conductor placed in the magnetic field is given by?

1. F=BILsin(θ)
2. F=BILcos(θ)
3. F=BILtan(θ)
4. F=BIL

Which organ pipe is richer in harmonics?

1. Open-ended pipe
2. Closed-ended pipe
3. Short pipe
4. Long pipe

The SI Unit of Activity is?

1. Curie (Ci
2. ) Becquerel (Bq)
3. Rutherford (Rd)
4. Hertz (Hz)

Sound waves in the air?

1. Transverse waves
2. Electromagnetic waves
3. Longitudinal waves
4. Surface waves

The motion of gas molecules is?

1. Linear and predictable
2. Circular and consistent
3. Random and chaotic
4. Oscillatory and uniform

The relative permittivity of a medium is defined by?

1. The ratio of the electric field in vacuum to the electric field in the medium
2. The ratio of the capacitance with the medium to the capacitance with air
3. Both A and B
4. The product of the electric field and the magnetic field in the medium

The velocity time graph is straight line with time axis then acceleration is?

1. Positive
2. Negative
3. Zero
4. Variable

The energy obtained by tapping the energy from the hot molten areas inside the earth crust is known as?

1. Solar energy
2. Wind energy
3. Geothermal energy
4. Hydroelectric energy

Which of the following quantities is conserved in Pair production?

1. Energy
2. Momentum
3. Electric Charge
4. All of them