MCAT Physics Chpter-8, MCAT Physics Chpter-8

MCAT Physics chapter wise notes, ECAT PHYSICS Notes chapter wise, free notes for entry test, free MCAT MCQS PHYSICS, free notes download for entry test preparation, Physics intermediate notes chapter wise free download

Physics Notes for MCAT, Physics notes for ECAT.

1.	A wave can transport
	a)	mass	b)	energy	c)	momentum	d)	B and c
2.	If water is disturbed in a  ripple tank periodically, waves one after the other passing through a point are known as
	a)	Matter waves	b)	Longitudinal waves	c)	Transverse periodic	d)	Mechanical waves
3.	When two identical travelling waves are superposed, the velocity of the resultant waves
	a)	Decrease	b)	Increase	c)	Remains constant	d)	Becomes zero
4.	Under stationary waves setup in a medium, the nodes are located at
	a)	(n+1)λ/4	b)	N λ/4	c)	nλ/2	d)	(2n+1)λ/2
5.	It is possible to distinguish between transverse and longitudinal waves from the property of
	a)	Refraction	b)	interference	c)	diffraction	d)	polarization
6.	The wavelength of the fundamental mode of vibration of a closed end pipe
	a)	2l	b)	l	c)	4l	d)	l/2
7.	Newtons calculated formula for speed of sound has an error of
	a)	6%	b)	16%	c)	10%	d)	None of these
8.	Velocity of sound in vacuum at 0°c is
	a)	332	b)	280	c)	333	d)	none
9.	The velocity of sound in air would become double than its velocity at 20°c at
	a)	313 k	b)	586 k	c)	899 k	d)	1172 k
10.	Silence zone takes place due to
	a)	Constructive interference	b)	Destructive interference	c)	.beats	d)	resonance
11.	In order to hear echo of sound ,the minimum distance between listener and obstacle must be
	a)	About 33 m	b)	About 17 m	c)	About 9.5 m	d)	About 8.5 m
12.	If 20 waves pass through a medium in 1 second with speed of 20 ms-1 then the wavelength
	a)	20 m	b)	2 m	c)	400 m	d)	1 m
13.	The number of nodes between two consecutive antinodes
	a)	Zero	b)	3	c)	2	d)	1
14.	It is observed that all the stars normally show
	a)	Red shift	b)	Blue shift	c)	Yellow shift	d)	None of these
15.	Which of the following properties of sound is effected by change in air temperature?
	a)	frequency	b)	Amplitude	c)	intensity	d)	wavelength

16.	If the frequency of a tuning fork is 32 Hz then after ¾ sec,it will complete…vibrations
	a)	12	b)	32	c)	24		d)	1/24
17.	No of harmonics in open pipe=n×no of harmonics in closed pipe,where n is
	a)	Odd number	b)	even number	c)	1		d)	2
18.	Stationary waves is the resultant of ……interference
	a)	constructive	b)	destructive	c)	Both of these		d)	None
19.	The mathematical formula to calculate speed of sound in air contains which modulus
	a)	Young’s	b)	Shear	c)	Bulk		d)	none
20.	The speed of wave in a stretched string is independent of
	a)	No of loops	b)	temperature	c)	d)	Tention force
21.	If pressure and absolute temperature of air is increased 4 times,the speed of sound in air will be
	a)	No change	b)	double	c)	half		d)	4 times
22.	Due to moisture in air speed of sound will
	a)	Increase	b)	Decrease	c)	No effect		d)	All possible
23.	For which gas ð has  maximum value
	a)	Monoatomic	b)	polyatomic	c)	diatomic		d)	All have same
24.	If the tension of stretched string is increased 9 times then velocity of wave will become
	a)	3 times	b)	Remains unchanged	c)	2 times		d)	9 times
25.	When a wave is reflected from a medium which one will change
	a)	Frequency	b)	wavelength	c)	speed		d)	None
26.	When a jet fighter moves faster than in air, a huge sound is produced called
	a)	Big bang	b)	Sonic -boom	c)	Ultra boom		d)	None of these
27.	A string vibrates in one loop has frequency 25 Hz.if it moves in 2 loops its frequency will be
	a)	25 Hz			b)	50 Hz
	c)	12.5 Hz			d)	5 Hz
28.	By waxing the prong of tuning fork its frequency will
	a)	decrease	b)	increase	c)	no effect		d)	None of these
29.	Doppler shift can be observed if……is moving
	a)	Source	b)	observer	c)	both		d)	none
30.	The persistence of hearing of human  hearing is
	a)	1 sec	b)	0.1 sec	c)	10 sec		d)	0.5 sec