Physics Part 2 Online Quiz

Q 1 - Optical fiber is preferably used in communication because …

A - Optical fiber is secure

B - Optical fiber is efficient

C - Optical fiber uses wireless technology

D - a & b

Q 2 - Who among the following has popularized the compound microscope especially among the biologists’ community?

A - Antonie van Leeuwenhoek

B - August Köhler

C - Frits Zernike

D - Cornelis Drebbel

Q 3 - The measuring unit of a magnetic flux is:

A - Weber

B - Siemens

C - Tesla

D - Henry

Q 4 - Bernoulli's theorem is related to …

A - Viscosity

B - Elasticity

C - Surface tension

D - Electric current

Q 5 - One acre is equal to …

A - 10⁴ sq. meter

B - 10² sq. meter

C - 10⁶ sq. meter

D - 10⁵ sq. meter

Q 6 - If you throw water on oily surface, then water does not stick with that because of …

A - Surface tension

B - Viscosity

C - No adhesive force

D - Water does not mix with oil

Q 7 - When a motor bike is accelerated its …

A - Speed may change, but may not change

B - Velocity remains same

C - Direction may change

D - Everything will remain unchanged

Q 8 - Oil and water never mix because …

A - Water molecules are polar and get attracted towards each other; on the other hand, oil molecules are non-polar hence water molecules repel them

B - Water molecules are much bigger in size hence do not get mixed with oil molecules

C - Weight of oil and water is almost same; hence, they do not get mixed

D - Oil molecules are sticky; hence do not get mixed with water

Q 9 - In terms of metric (SI) Unit, 1 light year =

A - 9.4607 × 10¹⁵ m

B - 9.4607 × 10¹⁵ km

C - 6.4607 × 10¹⁵ m

D - 9.4607 × 10¹⁸ m

Q 10 - Who had given the ‘Law of Electric resistance?’

A - Faraday

B - Ohm

C - Weber

D - Kelvin

Q 11 - Which among the following is not a scalar?

A - Mass

B - Speed

C - Volume

D - Velocity

Q 12 - Consider the following statements:

1. The value of gravitational force decreases due to rotation of the earth.

2. If the angular speed of the earth becomes 17 times of the present value, then the weight of body on equator will be zero.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Q 13 - Who among the following has discovered y-Rays?

A - Henry Becqueral

B - W Rontgen

C - Ritter

D - Newton

Q 14 - The branch of physics that analyzes the relationship between electrostatic and magnetic fields is known as:

A - Acoustics

B - Atomic Physics

C - Electrodynamics

D - Mechanics

Q 15 - A sitar transforms …

A - Mechanical energy into sound energy

B - Electrical energy into light energy

C - Electrical energy into light and heat energy

D - Chemical energy into electrical energy

Q 16 - A loud speaker transforms …

A - Mechanical energy into electrical energy

B - Chemical energy into light and heat energy

C - Sound energy into electrical energy

D - Electrical energy into sound energy

Q 17 - The sound frequency greater than the audible range i.e. (20,000 Hz) is known as …

A - Ultrasonic

B - Infrasonic

C - Hypersonic

D - Hyposonic

Q 18 - Consider the following statements:

1. Viscosity of an ideal fluid is zero.

2. Viscosity of fluid is measured by its coefficient of viscosity.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Q 19 - Who had given the ‘Principle of Relativity?’

A - Marconi

B - Einstein

C - Rutherford

D - Dirac

Q 20 - Which among the following is used to determine the speed of an aircraft?

A - Periscope

B - Manometer

C - Machmeter

D - Kymograph