50
Minutes
50
Questions
4 / -1
Marking
Q1. A bob is whirled in a horizontal plane by means of a string with an initial speed of ω rpm. The tension in the string is T. If speed becomes 2ω while keeping the same radius, the tension in the string becomes:
T
4T
T/4
√2T
Q2. A particle moving with uniform speed in a circular path maintains:
constant velocity
constant acceleration
constant velocity but varying acceleration
varying velocity and varying acceleration
Q3. A logic circuit provides the output Y as per the following truth table:
| A | B | Y |
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
The expression for the output Y is:
AB + A
AB + A
B
B
Q4. In the diagrams, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions:
AB and DC
BA and CD
AB and CD
BA and DC
Q5. Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason.
Assertion (A): The potential (V) at any axial point, at 2 m distance (r) from the centre of the dipole of dipole moment vector P of magnitude, 4×10⁻⁶ C m, is ±9×10³ V.
Reason (R): V = ±2P/(4πε₀r²), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below:
Both A and R are true and R is the correct explanation of A
Both A and R are true and R is NOT the correct explanation of A
A is true but R is false
A is false but R is true
Q6. Match List-I with List-II:
List-I (Material) - List-II (Susceptibility (χ))
A. Diamagnetic - I. χ = 0
B. Ferromagnetic - II. 0 > χ ≥ -1
C. Paramagnetic - III. χ >> 1
D. Non-Magnetic - IV. 0 < χ < ε (a small positive number)
Choose the correct answer from the options given below:
A-II, B-III, C-IV, D-I
A-II, B-I, C-III, D-IV
A-III, B-II, C-I, D-IV
A-IV, B-III, C-II, D-I
Q7. In a uniform magnetic field of 0.049 T, a magnetic needle performs 20 complete oscillations in 5 seconds. The moment of inertia of the needle is 9.8×10⁻⁶ kg m². If the magnitude of magnetic moment of the needle is x×10⁻⁵ Am²; then the value of x is:
5π²
128π²
50π²
1280π²
Q8. In an ideal transformer, the turns ratio Nₚ/Nₛ = 1/2. The ratio Vₛ:Vₚ is equal to:
1:2
2:1
1:1
1:4
Q9. In a vernier calipers, (N+1) divisions of vernier scale coincide with N divisions of main scale. If 1 MSD represents 0.1 mm, the vernier constant (in cm) is:
1/10N
1/100(N+1)
100N
10(N+1)
Q10. A horizontal force 10 N is applied to a block A as shown in figure. The mass of blocks A and B are 2 kg and 3 kg, respectively. The blocks slide over a frictionless surface. The force exerted by block A on block B is:
zero
4 N
6 N
10 N
Q11. If x = 5sin(πt + π/3) m represents the motion of a particle executing simple harmonic motion, the amplitude and time period of motion respectively, are:
5 cm, 2 s
5 m, 2 s
5 cm, 1 s
5 m, 1 s
Q12. The terminal voltage of the battery, whose emf is 10V and internal resistance 1Ω, when connected through an external resistance of 4Ω is:
4V
6V
8V
10V
Q13. Given below are two statements:
Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement II: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below:
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Q14. If c is the velocity of light in free space, the correct statements about photon among the following are:
A. The energy of a photon is E = hν
B. The velocity of a photon is c
C. The momentum of a photon, p = hν/c
D. In a photon-electron collision, both total energy and total momentum are conserved
E. Photon possesses positive charge
Choose the correct answer from the options given below:
A and B only
A, B, C and D only
A, C and D only
A, B, D and E only
Q15. Match List I with List II:
List I (Spectral Lines of Hydrogen for transitions from) - List II (Wavelengths (nm))
A. n₂=3 to n₁=2 - I. 410.2
B. n₂=4 to n₁=2 - II. 434.1
C. n₂=5 to n₁=2 - III. 656.3
D. n₂=6 to n₁=2 - IV. 486.1
Choose the correct answer from the options given below:
A-II, B-I, C-IV, D-III
A-III, B-IV, C-II, D-I
A-IV, B-III, C-I, D-II
A-I, B-II, C-III, D-IV
...and 35 more challenging questions available in the interactive simulator.