Diamagnetic material susceptibility χ is: MCQ with Answer and Explanation

Diamagnetic material susceptibility χ is:
A. Small positive
B. Large positive
C. Small negative
D. Large negative
Answer: Option C
Solution (By JKSSB Mock Tests)
Diamagnets: χ ≈ -10⁻⁵ (small negative), weakly repelled by magnetic fields. Paramagnets: small +χ; Ferromagnets: large +χ. Memory tip: 'Diamagnetic: χ < 0, weak repulsion'. Magnetism classification frequently tested in competitive exams.

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Practice More Physics Questions

Question #1
The gravitational force between two objects of masses 2 kg and 3 kg separated by 2 m (G = 6.67×10⁻¹¹) is
A. 2×10⁻¹⁰ N
B. 6.67×10⁻¹¹ N
C. 1.0005×10⁻¹⁰ N
D. 1×10⁻¹⁰ N

Correct Answer: Option C


Explanation:
F = G m1 m2 / r² = 6.67×10⁻¹¹ × 6 / 4 = 6.67×10⁻¹¹ × 1.5 = 1.0005×10⁻¹⁰ N.

This question belongs to: Science Physics
Question #2
The scientist who proposed the electromagnetic theory of light was
A. Maxwell
B. Newton
C. Huygens
D. Einstein

Correct Answer: Option A


Explanation:
Maxwell's equations predicted EM waves, light is EM.

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Question #3
The commercial unit of electrical energy is kWh. 1 kWh equals how many joules?
A. 3.6 × 10³ J
B. 3.6 × 10⁴ J
C. 3.6 × 10⁵ J
D. 3.6 × 10⁶ J

Correct Answer: Option D


Explanation:
1 kWh = 1000 W × 3600 s = 3,600,000 J = 3.6 × 10⁶ J. This is a standard conversion. Power (watt) × time (hour) gives energy. 1 watt = 1 J/s. Remember this for electricity bills.

This question belongs to: Science Physics