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Kinematics mcq for NEET. We covered all the Kinematics mcq for NEET in this post for free so that you can practice well for the exam.
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mcq on Kinematics for NEET Students
Compared to a common-emitter amplifier, a common-Base amplifier exhibits
(A) reduced input resistance
(B) increased output resistance
(C) lesser current gain
(D) greater current gain
Option c – lesser current gain
If there are three absorption transitions from the first to the fourth energy level in a hydrogen Atom, the number of emission transitions would be
(A) 3
(B) 4
(C) 5
(D) 6
Option d – 6
For a photodiode to release electrons, the required condition is
(A) hv = Eg
(B) hv ≤ Eg
(C) hv > Eg
(D) hv < Eg
Option c – hv > Eg
When 100 alpha particles are scattered per minute at 60°, the expected count at 90° would be
(A) 55
(B) 25
(C) 35
(D) 45
Option b – 25
The mean life and the half-life of a radioactive substance are
(A) inversely related
(B) directly related
(C) equal in value
(D) unrelated
Option b – directly related
Avalanche current in a p-n junction arises when the diode is
(A) forward biased
(B) reverse biased
(C) unbiased
(D) excessively biased
Option b – reverse biased
If the electron’s Mass is reduced to a quarter of its original value, the Rydberg constant will
(A) stay the same
(B) double
(C) become half
(D) become one-fourth
Option d – become one-fourth
When a nuclear reactor is operating at critical condition, its multiplication factor (K) is
(A) 2
(B) 2.5
(C) 1.5
(D) 1
Option d – 1
In an NPN transistor, if the collector current is 11 mA and the Base current is 100 µA, then the emitter current is
(A) 10.9 mA
(B) 10.1 mA
(C) 11.9 mA
(D) 11.1 mA
Option d – 11.1 mA
The binding energy per nucleon of a helium nucleus is
(A) zero
(B) 8.8 MeV
(C) greater than 8.8 MeV
(D) less than 8.8 MeV
Option d – less than 8.8 MeV
After three half-lives, the percentage of the initial radioactive substance remaining is
(A) 20%
(B) 9.5%
(C) 5%
(D) 12.5%
Option d – 12.5%
Two radioactive samples begin with the same number of atoms. If their half-lives are 5 years and 10 years respectively, the ratio of their decay rates after 20 years will be
(A) 1 : 4
(B) 1 : 2
(C) 3 : 4
(D) 2 : 3
Option b – 1 : 2
A full-wave rectifier using a 60 Hz AC supply will have a ripple frequency of
(A) 120 Hz
(B) 30 Hz
(C) 70.7 Hz
(D) 90 Hz
Option a – 120 Hz
When the temperature of a semiconductor rises, its electrical conductivity
(A) decreases
(B) increases
(C) remains constant
(D) may either increase or decrease
Option b – increases
A radioactive material has a half-life of 4 hours. Starting from 300 g, the amount left after 24 hours will be
(A) 9.375 g
(B) 46.8 g
(C) 93.75 g
(D) 4.69 g
Option d – 4.69 g
The average lifetime of a radioactive substance is equal to
(A) twice its decay constant
(B) half of its decay constant
(C) the same as its decay constant
(D) the reciprocal of its decay constant
Option d – the reciprocal of its decay constant
Changing the temperature affects a p-n junction by
(A) increasing reverse resistance
(B) altering the V-I characteristics
(C) not affecting the junction characteristics
(D) raising forward resistance
Option b – altering the V-I characteristics
In Bohr’s hydrogen Atom model, when an electron moves to a higher orbit, then
(A) total energy decreases and potential energy increases
(B) total energy increases and potential energy increases
(C) both total and potential energies decrease
(D) total energy increases while potential energy decreases
Given a Mass defect of 0.0303 amu for a helium nucleus, its binding energy per nucleon is approximately
(A) 28
(B) 7
(C) 4
(D) 1
Option b – 7
After four half-lives, the portion of radioactive nuclei that has decayed is
(A) 0.75
(B) 0.50
(C) 0.94
(D) 0.25
Option c – 0.94
For a CE amplifier with a voltage gain of 160, if the input signal is V₁ = 2 cos(20t + 15°), the output signal will be
(A) 320 cos(20t + 165°)
(B) 320 cos(20t + 195°)
(C) 160 cos(20t + 195°)
(D) 160 cos(20t + 165°)
Option b – 320 cos(20t + 195°)
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