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 : 11 [UPPCS (Pre) 2007]

It is more comfortable to wear white cloth in summer because

a) They radiate heat transferred from the body

b) They absorb perspiration

c) They reflect all the heat falling on them

d) They are soothing to the eye

Answer: (c)

Question : 12

Which of the following is not close to a black body?

a) Black holes

b) Black board paint

c) Green leaves

d) Red roses

Answer: (b)

Question : 13

When a drop of oil is spread on a water surface, it displays beautiful colours in daylight because of

a) polarization of light

b) dispersion of light

c) reflection of light

d) interference of light

Answer: (d)

The colours are seen due to interference of light. The colours seen in reflected light are complementary with the colours seen in transmitted light.

Question : 14 [IAS (Pre) 2017]

Ultrasonics are sound waves of frequency

a) Less than 10,000 Hz

b) Equal to 1000 Hz

c) Greater than 20,000 Hz

d) None of the above

Answer: (c)

Question : 15 [UPPCS (Mains) 2011]

CT scan is done by using

a) Visible Light

b) Ultrasonic Waves

c) Infra-red Rays

d) X-Rays

Answer: (d)

IMPORTANT general science mcq EXERCISES

set 3 Online Quiz

Click to Start..
1641 light thermodynamics sound optics and oscillations based general science mcq set 3 question answer pdf
general science mcq CATEGORIES

Recently Added Subject & Categories For All Competitive Exams

100+ Quadratic Equation Questions Answers PDF for Bank

Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

IBPS Aptitude Linear Equations MCQ Questions Answers PDF

Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

New 100+ Compound Interest MCQ with Answers PDF for IBPS

Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams

02-Jul-2024 by Careericons

Continue Reading »

100+ Mixture and Alligation MCQ Questions PDF for IBPS

Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams

02-Jul-2024 by Careericons

Continue Reading »