Physics Multiple-Choice Questions (MCQs) for Test Preparation ranging from Basic to Advanced. Physics Mcqs are from various disciplines of Physics. MCQs for Physics subjects ranging from basic to advanced are available here. This will help you achieve better grades in Physics. These MCAT ECAT ETEA exam preparation Mcqs are beneficial for students and job seekers, such as MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, PTS, OTS, GTS, JTS, CTS.

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Created on April 01, 2022 By Preptestsonline

Physics MCQs Set 1

1 / 15

An immersion heater of 400 watts kept on for 5 hours will consume electrical power of __________________?

2KWh

20KWh

6KWh

12KWh

2 / 15

Thermocouples convert___________________?

heat energy into electrical energy

heat energy into light energy

heat energy into mechanical energy

mechanical energy into heat energy

3 / 15

Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?

40 W

90W

100W

120W

4 / 15

Production of heat due to an electric current flowing through a conductor is given by _________________?

Joule effect

Joule Thomsons effect

Comptons effect

Feed back effect

5 / 15

A wire having very high value of conductance is said to be____________________?

very good conductor

moderately good conductor

an insulator

no specific criterion available

6 / 15

The current through a metallic conductor is due to the motion of _________________?

free electrons

protons

neutrons

still under controversy

7 / 15

Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?

One

Two

Four time

None of these

8 / 15

The beats frequency (sensible) for a human car is _____________________?

42Hz

7 Hz

256Hz

262Hz

9 / 15

Laplace found that the alternate compressions and rarefactions produced in sound waves follows ________________?

isothermal law

adiabatic law

isochoric law

all of the above

10 / 15

Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are__________________?

Longitudinal

Transverse

Periodic

both A and C

11 / 15

The dimension of elastic modulus is ___________________ ?

ML-1T-2

ML-2T-2

MLT-2

ML2T-2

12 / 15

In open organ pipe___________________?

only even harmonics are present

only odd harmonics are present

both even and odd harmonics are present

selected harmonics are present

13 / 15

A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency ?

1/4f

1/2f

frequency lower than 20 Hz

2f

14 / 15

Doppler effect applies to____________________?

sound wave only

light wave only

both sound and light waves

neither sound nor light wave

15 / 15

Beats are the results of____________________?

diffraction of sound waves

constructive and destructive interference

polarization

destructive interference

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