MCQ
According to the Heisenberg uncertainty principle:
  • A
    Momentum of an electron can be found exactly if its position is known.
  • B
    The lowest energy of an atom can hold only one electron.
  • C
    Light has a dual nature- wave and photon.
  • D
    There is a limit to the accuracy of the measurement of subatomic particles.

Answer

  1. There is a limit to the accuracy of the measurement of subatomic particles.

Explanation:

According to the Heisenberg uncertainty principle, the position and the momentum of the particle cannot be measured accurately simultaneously. Thus there is a limitation to the accuracy of the measurement of subatomic particles.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The power loss in an AC circuit is Erms​ Irms​, when in the circuit there is only.

Force between two identical bar magnets whose centres are r metre apart  is 4.8 N, when their axes are in the same line. If separation is increased to 2r, the force between them is reduced to

(a) 2.4N

(b) 1.2N

(c) 0.6N

(d) 0.3N

Consider the situation of figure. The work done in taking a point charge from P to A is WA, from P to B is WB and from P to C is WC.

  1. WA < WB < WC
  2. WA > WB > WC
  3. WA = WB = WC
  4. None of these.

Range of wavelength of X-rays is:
From which layer of atmosphere are radiowaves reflected ?

Assertion  :  Cyclotron is a device which is used to accelerate the positive ion.

Reason      : Cyclotron frequency depends upon the velocity.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c) If assertion is true but reason is false.

(d) If the assertion and reason both are false.

If a transparent medium of refractive index m = 1.5 and thickness t = 2.5 × 10–5 m is inserted in front of one of the slits of Young’s Double Slit experiment, how much will be the shift in the interference pattern? The distance between the slits is 0.5 mm and that between slits and screen is 100 cm

(a) 5 cm  

(b) 2.5 cm

(c) 0.25 cm

(d) 0.1 cm

Energy of the electron in nth orbit of hydrogen atom is given by . The amount of energy needed to transfer electron from first orbit to third orbit is

(a) 13.6 eV

(b) 3.4 eV

(c) 12.09 eV

(d) 1.51 eV

A charged particle moves in a gravity-free space without change in velocity. Which of the following is are possible:
  1. $\text{E}=0,\ \text{B}=0$
  2. $\text{E}=0,\ \text{B}\not=0$
  3. $\text{E}\not=0,\ \text{B}=0$
  4. $\text{E}\not=0,\ \text{B}\not=0$
A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly:
  1. A straight line.
  2. A circular are.
  3. A parabola.
  4. An ellipse.