Physics Class 10th Practice Tests
Get all practice tests of 10th class Physics chapter wise. All these mcqs short questions and long questions are collected from past papers of Lahore Board.
10th Physics Past Papers Unite Wise Papers:
QNO1:Tick
the correct answer of the following.
1)Speed
of sound in iron at 25oC
(a)5950ms-1
(b)5950 ms-2
(c)6040
ms-1 (d)3070
ms-1
2)Vibrator of ripple tank produce
(a)sound
waves (b)air waves
(c)water
waves (d)a and b
3)In
human body sound waves produced.
(a)heart (b)lungs
(c)both
a and b (d)none
4)The
intensity of rustle of leaves
(a)130dB (b)110dB
(c)0dB (d)2dB
5)The
unit of intensity of sound آواز کی
(a)wm-2
(b)wm-1
(c)Ns-1
(d)KWm-1
6)Which
sound has pleasant effect on our ear.
(a)sound
of flute (b)sound of
piano
(c)sound
of guitar (d)all of
these
7)Young
children can hear sound of
(a)200,000Hz (b) 2,00000Hz
(c)
20,000Hz (d)
220,000Hz
8)Which
is form of energy (sound) ۔
(a)electrical (b)mechanical
(c)thermal (d)chemical
9)Sound
travel at oC
(a)300ms-1
(b)336ms-1
(c)360ms-1
(d)310ms-1
10)Find
f = ? if v = 340ms-1 and λ = 0.5m
(a)680Hz (b)600 Hz
(c)650Hz (d)700Hz
QNO2:Short Questions.
1)Reflection of sound?(2)Effect
of noise on environment?(3)Define ultra sound?(4)Define audible frequency and
example?(5)Why ultrasound is useful in medical field?(6)You can listen to your friend
round a corner, but you cannot watch him/her why?(7)Three uses of
ultrasound?(8)Calculate the frequency of a sound wave of speed 340ms-1
and λ is 0.5m?(9)Define intensity(10)Differentiate
b/w pitch and quality ?
Long Questions.
1)(a):Explain characteristics of sound?
(b):A sound wave has a frequency of 2KHz and λ is 35cm how long will it take to
travel 1.5Km?
2(a):Explain characteristics of ultrasound.
(b):A doctor counts 72 heart beats in 1
min. calculate the frequency and period of the heartbeats
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