999+ Physics Questions Answers Explanation MCQ

Q:

What is the resistance (in Ω) of an electrical component if a current of 0.2 A passes through it on application of 8 V of potential difference across it?

A) 40	B) 1.6
C) 80	D) 3.2

Answer & Explanation Answer: A) 40

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 389

Q:

The SI unit of electric charge is

A) ohm	B) volt
C) ampere	D) coulomb

Answer & Explanation Answer: D) coulomb

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 388

Q:

If a current of 1.5 A is maintained in a resistor of 10 ohm, then the energy dissipated in the resistor in 1 minute will be

A) 15 W	B) 22.5 W
C) 135 W	D) 1350 W

Answer & Explanation Answer: D) 1350 W

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

0 386

Q:

Which of the following is NOT an application of Fiber optics?

A) Power Generation	B) Computer Networking
C) Sensors	D) Power Transmission

Answer & Explanation Answer: A) Power Generation

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 385

Q:

What does Coulomb's Law state?

A) The magnitude of the force of attraction (or repulsion) between two point charges is inversely proportional to the product of quantity of the two charges as well as to the square of the distance between them.	B) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and inversely proportional to the square of the distance between them.
C) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and directly proportional to the square of the distance between them.	D) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and to the square of the distance between them.

Answer & Explanation Answer: B) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and inversely proportional to the square of the distance between them.

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 381

Q:

In a concave mirror when the object is placed at infinity which of the following applies to the image?

A) Real, inverted, highly enlarged image at center of curvature (C)	B) Real, inverted image of the same size at centre of curvature (C)
C) Real, inverted, diminished image between centre of curvature (C) and principal focus (F)	D) Real, inverted, highly diminished image at focus

Answer & Explanation Answer: D) Real, inverted, highly diminished image at focus

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

1 380

Q:

Which of the following devices helps to maintain a potential difference across a conductor?

A) Galvanometer	B) Ammeter
C) Voltmeter	D) A cell or battery

Answer & Explanation Answer: D) A cell or battery

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

2 379

Q:

What is not true with CT Scan?

A) Combines many X-ray images	B) Scanning is often painful
C) Generates 3-D cross-sectional views	D) Identifies normal and abnormal structures

Physics Questions

Quick Links