Olete.in – MCQs, Mock Tests & Government Job Prep | CBES Board Class 11 MCQ Questions for Class 11 Physics Chapter 1 Physical World

The word Science originates from the Latin verb Scientia meaning

1. to know
2. to see
3. to experience
4. to observe

✅ Correct Answer: 1

Atomic and molecular phenomena are dealt with by

1. Newtonian Mechanics
2. fluid Mechanics
3. applied Mechanics
4. Quantum Mechanics

✅ Correct Answer: 4

Wave picture of light failed to explain.

1. the photoelectric effect
2. polarization of light
3. diffraction of light
4. interference of light

✅ Correct Answer: 1

Heliocentric theory proposed by Nicolas Copernicus was

1. replaced by circular orbits to fit the data better
2. replaced by elliptical orbits to fit the data better
3. replaced by elliptical orbits to fit the taste of new rulers of Italy
4. replaced by parabolic orbits to fit the data better

✅ Correct Answer: 2

A scientific theory

1. cannot be changed but can be reformulated
2. is fixed once and for all because it is logical
3. is changed to suit new fashion among scientists
4. can be revised if required to fit new phenomenon or data

✅ Correct Answer: 4

The dimensions of kinetic energy is

1. [M 2L2T]
2. [ML 2T]
3. [ML 2T-2]
4. ML 2T-1]

✅ Correct Answer: 3

The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?

1. 105 newton/m² (
2. 106 newton/m²
3. 104 newton/m²
4. 103 newton/m²

✅ Correct Answer: 1

The dimensions of kinetic energy is same as that of

1. force
2. pressure
3. work
4. momentum

✅ Correct Answer: 3