C. V. Raman is known for his work on: MCQ with Answer and Explanation

C. V. Raman is known for his work on:
A. Raman effect (light scattering)
B. Theory of relativity
C. Electromagnetic induction
D. Photoelectric effect
Answer: Option A
Solution (By JKSSB Mock Tests)
Sir C. V. Raman discovered the Raman effect in 1928: inelastic scattering of photons by molecules, changing wavelength, providing information about molecular structure. He received the Nobel Prize in Physics in 1930. Photoelectric effect: Einstein; relativity: Einstein; electromagnetic induction: Faraday. Memory tip: 'Raman = scattering of light'. This scientist-discovery question tests knowledge of Indian contributions to physics, commonly featured in competitive exams. Always link Nobel laureates to their specific awarded work.

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Practice More Physics Questions

Question #1
A Wheatstone bridge is said to be completely balanced when:
A. The battery supplies zero current.
B. Current through the galvanometer is maximum.
C. Potential difference across the galvanometer is zero.
D. All four resistors have exactly identical values.

Correct Answer: Option C


Explanation:
A Wheatstone bridge circuit consists of four arms with resistances P, Q, R, S and a galvanometer in the middle. It is balanced when no current flows through the galvanometer arm. This happens exclusively when the potentials at the two ends of the galvanometer are equal, meaning the potential difference across it is exactly zero (P/Q = R/S).

This question belongs to: Science Physics
Question #2
Which of the following physical quantities is an example of a vector quantity?
A. Electric potential
B. Electric charge
C. Electric field intensity
D. Electric current

Correct Answer: Option C


Explanation:
A vector quantity possesses both magnitude and a specific spatial direction, and it must obey the laws of vector addition. Electric field intensity is a vector (force per unit charge, having the direction of the force). Electric current has a direction in circuits but adds algebraically like a scalar (violating vector addition). Charge and potential are standard scalars.

This question belongs to: Science Physics
Question #3
Assertion (A): In a free fall, a heavy object falls faster than a light object. Reason (R): Acceleration due to gravity is same for all objects.
A. Both A and R true, R not correct explanation
B. A is true, R is false
C. Both A and R true, R is correct explanation
D. A is false, R is true

Correct Answer: Option D


Explanation:
In vacuum, all objects fall at same rate. A is false. R is true. So C correct.

This question belongs to: Science Physics