10th Class Physics MCQS Chapter 2

At extreme position potential energy of the pendulum is:

Minimum

Both a and b

Maximum

Zero

The product of frequency and time period is equal to:

0

L

1

v

The waves in which particles of the medium vibrate parallel to the direction of waves are called:

Electromagnetic waves

Both a and c

Longitudinal waves

Transverse waves

Information storage device work on the principles of:

Light

Magnetism

Sound

Heat

The force applied on the mass attached with a spring is represented by:

f_ext

f_c

f_s

f_a

The speed of sound in the air at one atmospheric pressure at room temperature is:

339 ms 1

349 ms 1

343 ms-1

346 ms 1

When frequency of sound wave is increased, which of the following decreases? i) Wavelength ii) Period iii) Amplitude

i and ii only

i only

i and iii only

(iii) only

Old people can not hear sound above then _____ Hz

15000

10000

1000

20000

Which of the following reasons increase the importance of computer:

Long time storage of memory

Speedy

Quick decision

All of these

Which is an example of a longitudinal wave?

Radio wave

Water wave

Sound wave

Light wave