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Atoms — JEE Main Physics MCQs with Solutions
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Sample questions with solutions
Q1 — medium · theory
B0 2
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q2 — medium · theory
Given below are two statements: In the light of the above statements, choose
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q3 — medium · theory
In Bohr's atomic model of hydrogen, let K. P MODERN PHYSICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q4 — medium · theory
If an electron is moving in the nth orbit of the
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q5 — medium · theory
(1) 24-2. (4) ANSWER KEY 24-4. (4) 24-5. (2)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q6 — medium · numerical
eV = hv − ������ 24-6. Since < f
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q7 — medium · numerical
E 301.6 sin(k z t)(aˆ x ) 452.4 sin(kz t)aˆ y Fmax = eB0V
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q8 — medium · numerical
3 108 sin[200(y ct)] ˆi T 21-6. in vacuum = c 3 108 0.1m
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q9 — medium · theory
[JEE-Main_050424_(S1)]
A. Statement-I is correct and Statement-II is 24-4. The de-Broglie wavelength of an electron is ✓ Correct
B. Statement-I is incorrect but Statement-II is the same as that of a photon. If velocity of
C. Both Statement-I and Statement-II are electron is 25% of the velocity of light, then
D. Both Statement-I and Statement-II are the ratio of K.E. of electron and K.E. of photon
Q10 — medium · theory
C. Max. K.E with which photoelectrons are
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q11 — medium · theory
and E are the kinetic energy, potential energy
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q12 — medium · theory
h ������ 23-1.
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q13 — medium · numerical
e = photon 22-8. MODERN PHYSICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q14 — medium · theory
The statement II is wrong as the velocity of E0 ˆi ˆj cos[] E0 ˆi ˆj
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q15 — medium · theory
Theoretical m m 6.67 cm
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q16 — medium · theory
frequency 1.5 times the threshold frequency emitted depends on the frequency of incident
A. Doubled (2) Quadrupled light. ✓ Correct
B. Zero (4) Halved
C. 94.1 nm (2) 941 nm gas at room temperature (300 K) is 1. If the
D. 97.4 nm (4) 99.3 nm then the de Broglie wavelength of the same
Q17 — medium · theory
and total energy of the electron respectively. Choose the correct answer from the options
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q18 — medium · theory
With what speed should a galaxy move mp 3/2 MODERN PHYSICS
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q19 — medium · theory
23-2. i.e. the incident frequency is less than
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q20 — medium · numerical
= 4500 Å L 2m
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q21 — medium · theory
In EMW, Average energy density due to
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q22 — medium · theory
c E0 E0 cB0 ˆi ˆj .
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q23 — medium · theory
1.5 15
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q24 — medium · theory
Choose the correct option when the electron given below :
A. (a) – (iii), (b) – (i), (c) – (ii), (d) – (iv) ✓ Correct
B. All K. P and E increase. (4) (a) – (iii), (b) – (iv), (c) – (i), (d) – (ii)
C. K decreases. P and E increase.
D. P decreases. K and E increase. 22-5. An particle and a carbon 12 atom has same
Q25 — medium · theory
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q26 — medium · theory
ee 23-4. threshold frequency. Hence there will be no
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q27 — medium · theory
B 1.2 107 sin(0.5 103 x 1.5 1011t)kˆ T
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q28 — medium · theory
1 0E02 C Energy for volume
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q29 — medium · theory
outward with respect to earth so that the (1) me (2) me
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D
Q30 — medium · theory
(1) 22-1. (2) 24-3. (2) 22-3. (1) 22-4. (1)
A. Option A ✓ Correct
B. Option B
C. Option C
D. Option D