Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations - Category Wise Question And Answer Practice Test With Solutions
LIGHT, HEAT, THERMODYNAMICS, WAVE MOTION, SOUND, OPTICS & OSCILLATIONS PRACTICE TEST [16 - EXERCISES]
Set 1
Set 2
Set 3
Set 4
Set 5
Set 6
Set 7
Set 8
Set 9
Set 10
Set 11
Set 12
Set 13
Set 14
Set 15
Set 16
Question : 12 [NDA]
Consider the following statements : If the same note is played on a flute and a sitar, one can still distinguish between them because they differ in
- frequency
- intensity
- quality
a) 2 and 3 only
b) 1 and only
c) 3 only
d) 2 only
Answer »Answer: (c)
Question : 13
Which of the following processes result in cooling ?
- Evaporation of liquid
- Compression of gas
- Shaking a liquid in a vessel
- Adiabatic expansion of a gas
a) 2 and 3
b) 1 and 4
c) 1 and 3
d) 3 and 4
Answer »Answer: (b)
- The process of a liquid changing into its vapour below its boiling point is called evaporation. In this process remaining water after evaporation loses heat and gets cooled.
- If a gas is compressed, work is done on it which results in heating of the system or an increase in temperature.
- On shaking a liquid in a vessel, the kinetic energy of liquid molecules increases and hence, the temperature of the system increases.
-
In adiabatic process ΔQ = 0
From the first law of thermodynamics,
ΔQ = ΔU + ΔW
We have ΔU + ΔW = 0
If the gas expands adiabatically (DW→positive), DU will be negative, so internal energy and hence, the temperature of the system will decrease. Thus, the gas is cooled.
Thus option (b) is correct.
Question : 15
Match List - I with List - II:
List I | List II |
A. high pitch | 1. Faint sound |
B. low pitch | 2. Loud sound |
C. small amplitude | 3. High frequency |
D. large amplitude | 4. Low frequency |
a) A – 4, B – 1, C – 2, D – 3
b) A – 2, B – 1, C – 4, D – 3
c) A – 2, B – 3, C – 4, D – 1
d) A – 3, B – 4, C – 1, D – 2
Answer »Answer: (b)
The faster the vibration of source, the higher is the frequency and the higher is the pitch.
IMPORTANT GENERAL SCIENCE MCQ EXERCISES
-
Top Physics Objective GK Questions Answers Practice Quiz »
-
199+ Physics objective questions and answers to Banking »
-
Top Physics GK Questions and Answers Competitive Exams »
-
Basic 199+ Physics Objective Questions With Answers SSC »
-
New Physics General Knowledge MCQ Questions Answer IBPS »
-
Top Physics GK MCQ questions answers competitive exam »
-
New Physics General Knowledge MCQ All Competitive Exams »
-
Top Physics Thermodynamics GK MCQ Questions And Answers »
-
New Physics GK Objective Questions For Competitive Exams »
-
299+ Important Physics MCQs Test for Competitive Exam »
-
New 249+ Physics Multiple Choice Questions For Bank, SSC »
-
Top 199+ Physics General Knowledge Questions and Answers »
-
Top 199+ Physics Light MCQ Practice Test For Bank Exams »
-
Top 229+ MCQs on Heat Physics GK For Competitive Exams »
-
New 246+ General Science Physics MCQs Questions For IBPS »
-
New General Science Physics Questions Answers MCQ PDF »
set 6 Online Quiz
Click to Start..General Science Mcq CATEGORIES
-
» Measurement And SI Units
-
» Measuring Devices And Scales
-
» Mechanics (Mass, Force, Acceleration, Work, Energy, Momentum, Velocity)
-
» Force Of Gravity, Solids And Fluids
-
» Motion Under Gravity
-
» Physical Properties Of Materials
-
» Light, Heat, Thermodynamics, Wave Motion, Sound, Optics & Oscillations
-
» Electric Current And Magnetism
-
» Nuclear Physics And Conductivity
-
» Modern And Space Physics, Sources Of Energy
-
» General Concepts Of Chemistry
-
» Nature Of Matter And Composition
-
» Atomic Structure Molecules And Nuclear Chemistry
-
» Classification Of Elements, Chemical Bonding, Periodicity In Properties & Physical Transformation
-
» Metals, Non Metals, Minerals, Ores, Properties, Uses
-
» Alloys, Carbon & Its Various Forms, Hydrogen & Compounds, Sulphur, Nitrogen, Halogen & Inert Gases
-
» Acids, Bases, Salts And Metals
-
» Hydrocarbon, Alcohol, Polymer, Organic Acid And Explosive Substance
-
» Fuel, Food Preservation, Nutrition, Medicine, Detergents And Fertilizers
-
» Inorganic Chemistry
-
» Organic Chemistry
-
» Environmental Chemistry
-
» Some Important Man Made Materials
-
» Sub Divisions Of Biology
-
» Genetics, Evolution Of Life & Ecological Biodiversity
-
» Taxonomy
-
» Heredity
-
» Biofertilizer
-
» Biological Classification Cell Tissues And Division
-
» Human Anatomy
-
» Blood Transport System
-
» Digestion And Excretion
-
» Photosynthesis
-
» Vitamins, Nutrition, Health, Disease And Treatment
-
» Endocrine Glands, Hormones
-
» Physiology Of Plants, Humans And Animals
-
» Reproduction
-
» Genetic Engineering And Bio Technology