Below Question in Option and Ans Given below side read and try to solve Physics Models Question Paper with Answer
If both the speed of body and the radius of it's circular path are doubled, the centripetal force will
(a) remain same (b) be doubled
(c) be halved (d) be zero
ANS : B
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The circumference of a track is 1.256 km. What is the angle of banking of the track, if the maximum speed at which a car can be driven safely along it's path is 25 m/s ?
(a) 17° 41' (b) 7° 41'
(c) 9° 1' (d) 89° 8'
Ans : A
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In case of diatomic molecule, the ratio of two specific heats is
(a) 1.33 (b) 1.11
(c) 1.4 (d) 1.67
Ans : C
-------------------------------------------------
Which one of the following statements about acceleration due to gravity is true ?
(a) g has maximum value at the equator
(b) g has same value at all places on the surface of earth
(c) g is less at earth surface than that at height above it of a depth below it
(d) g is greater at the poles than at equator
Ans : D
-------------------------------------------------
A sample of 0.177 g of an ideal gas occupies a volume of 1000 C.0 at STP. The rms speed of gas is nearly
(a) 1425 m/s (b) 1300 m/s
( c ) 1200 m/s ( d) 1100 m/s
Ans : B
-------------------------------------------------
Which one of the following quantities remains constant in a planetary motion (consider elliptical orbit) as seen from sun ?
(a) angular momentum (b) speed
(c) angular speed (d) kinetic energy
Ans : A
-------------------------------------------------
The frequency of open pipe is f. If half of the open pipe is dipped in water, then frequency is
(a) f/2 (b) f
(c) 2f (d) 3f/4
Ans : B
---------------------------------------------------------
What is the velocity of gas in which two waves of length 50 cm and 50,5 cm produce 6 beats ?
(a) 333 m/s (b) 330 m/s
(c) 300 m/s (d) 303 m/s
Ans : D
---------------------------------------------------------
On a cold morning, a metal plate will feel colder to touch than a woolen surface because...
(a) metal has high specific heat
(b) metal has high thermal conductivity
(c) metal has low specific heat
(d) metal has low thermal conductivity
Ans : B
-------------------------------------------------------
A set of tuning fork is arranged in ascending order of frequencies each tuning fork gives 4 beats Is with the preceding one. If frequency of first tuning fork is ' 100 Hz and the last
fork is 140 Hz, then number of tuning fork arranged will be
(a) 12 (b) 10
(c) 11 (d) 09
Ans : C
---------------------------------------------------------
Mean free path is ...
(a) directly proportional to density and inversly proportional to mass of molecule
(b) inversly proportional to density of gas and directly proportional to mass of molecule
(c) directly proportional to density of gas and mass of molecule
(d) inversly proportional to density of gas and mass of molecule
Ans : B
---------------------------------------------------------
A soap bubble of radius (1/-jc.) cm is expanded to a bubble of radius (2/A5) cm. If the surface tension of soap solution is 25 dyne/cm, then the work done will be
(a) 150 erg (b) 300 erg
(c) 600 erg (d) 1200 erg
Ans : C
---------------------------------------------------------
What will be the number of gas molecules in one litre of gas at NTP, if mass of each molecule is 3 x 105 ';ig and rms velocity at NTP is 300 mils? (Assume P = 105 N/m2)
(a) 1.11 x 1022 (b) 3.7 x 1021
( c) 7.4 x 1021 (d) 2.22 x 1022
Ans : A
---------------------------------------------------------
An athermous metal plate has coefficient of absorption 0.6. A quantity of heat 400 kcal is incident on the plate. What will be the quantity of heat reflected ?
(a) 240 kcal (b) 260 kcal
(c) 300 kcal (d) 320 kcal
Ans : B
---------------------------------------------------------
For a liquid which is rising in a capillary, the angle of contact is
(a) 180° (b) 90°
(c) obtuse (d) acute
Ans : D
---------------------------------------------------------
If we start filling empty vessel with water then frequency of air column will
(a) increase (b) decrease
(c) remains constant (d) none of these
Ans : A
---------------------------------------------------------
In a sonometer wire 50.7 kg wt is hanged from free end. Volume of weight is 0.0075 II13 and fundamental frequency of water is 260 Hz. If weight is completely immersed in water,
then the fundamental frequency will be
( a) 220 Hz (b) 240 Hz
(c) 280 Hz (d) 300 Hz
Ans : B
---------------------------------------------------------
The density and breaking steel of wire is 8.7 gcm-3 and 8.7 x 108 Nm-2 respectively. The greatest length of steel wire that can hang vertically without breaking is
(a) 10 cm (b) 10 km
(c) 100 cm (d) 1 km
Ans : B
---------------------------------------------------------
The temperature of a body decreases from 62°C to 50°C in 10 minutes. If temperature of surrounding is 26°C, the tempera-W.' reiten,the next 10 minutes will be
(a) 40°C (b) 38°C
(c) 42°C (c) 46°C
Ans : C
---------------------------------------------------------
Practically, Poisson's ratio cannot have the value
(a) 0.1 (b) 0.7
(c) 0.2 .(d) 0.5
Ans : B
---------------------------------------------------------
A particle is performing SHM. A graph of which of the following is a straight line ?
(a) Total energy against displacement
(b) potential energy against displacement
(c) acceleration against time
(d) velocity against displacement
Ans : A
---------------------------------------------------------
Heat is incident at the rate of 10 watt on a opaque body having emissivity 0.8. What is the quantity of radiant heat reflected by it in one minute ?
(a) 60J (b) 80J
(c) 100J (d) 120J
Ans : D
---------------------------------------------------------
When sugar is added in the water, the surface tension of resulting sugar solution is
(a) less than that of water
(b) same as that of water
(c) more than that of water
(d) sometimes more, sometimes less than that of water
Ans : C
---------------------------------------------------------
Hot water cools from 60° to 50° C in the first 10 minutes and to 42° C in the next 10 minutes. The temperature of surrounding is
(a) 20°C (b) 15°C
(c) 10°C (d) 30°C
Ans : C
---------------------------------------------------------
A wire is stretched by 0.5% of it's length. If Young's modulus of wire is 1.2 x 1011 N/m2, what is the energy stored per unit volume in wire ?
(a ) 1.5 x 106 J/m2 (b) 1.5 x 106 J/m2
( c ) 3 x 106 J/m2 (d) 3 x 105 J/m2
Ans : A
---------------------------------------------------------
A body is projected with 15 km/s. What is the velocity in the outer space far off the earth ? (away from it's gravitational field)
(a) 3.8 km/s ( b) 11.2 km/s
(c) 10 km/s (d) 7.8 km/s
Ans : C
---------------------------------------------------------
In Melde's experiment, the number of loops on the string changes from 5 to 4 by an addition of 0.018 kg wt. What is the initial tension ?
(a) 0.032 kg wt (b) 0.016 kg wt
(c) 0.024 kg wt (d) 0.40 kg wt
Ans : A
---------------------------------------------------------
A racing car passes a stand of race course travelling with speed of 144 km/hr. If the noise from the exhaust has a frequency of 300 Hz, what is the frequency heard by audiance as
the car approached stand if speed of sound is 340 m/s ?
(a) 300 Hz (b) 3401-17
(c) 350 Hz (d) 320Hz
Ans : B
---------------------------------------------------------
If both the speed of body and the radius of it's circular path are doubled, the centripetal force will
(a) remain same (b) be doubled
(c) be halved (d) be zero
ANS : B
-------------------------------------------------
The circumference of a track is 1.256 km. What is the angle of banking of the track, if the maximum speed at which a car can be driven safely along it's path is 25 m/s ?
(a) 17° 41' (b) 7° 41'
(c) 9° 1' (d) 89° 8'
Ans : A
-------------------------------------------------
In case of diatomic molecule, the ratio of two specific heats is
(a) 1.33 (b) 1.11
(c) 1.4 (d) 1.67
Ans : C
-------------------------------------------------
Which one of the following statements about acceleration due to gravity is true ?
(a) g has maximum value at the equator
(b) g has same value at all places on the surface of earth
(c) g is less at earth surface than that at height above it of a depth below it
(d) g is greater at the poles than at equator
Ans : D
-------------------------------------------------
A sample of 0.177 g of an ideal gas occupies a volume of 1000 C.0 at STP. The rms speed of gas is nearly
(a) 1425 m/s (b) 1300 m/s
( c ) 1200 m/s ( d) 1100 m/s
Ans : B
-------------------------------------------------
Which one of the following quantities remains constant in a planetary motion (consider elliptical orbit) as seen from sun ?
(a) angular momentum (b) speed
(c) angular speed (d) kinetic energy
Ans : A
-------------------------------------------------
The frequency of open pipe is f. If half of the open pipe is dipped in water, then frequency is
(a) f/2 (b) f
(c) 2f (d) 3f/4
Ans : B
---------------------------------------------------------
What is the velocity of gas in which two waves of length 50 cm and 50,5 cm produce 6 beats ?
(a) 333 m/s (b) 330 m/s
(c) 300 m/s (d) 303 m/s
Ans : D
---------------------------------------------------------
On a cold morning, a metal plate will feel colder to touch than a woolen surface because...
(a) metal has high specific heat
(b) metal has high thermal conductivity
(c) metal has low specific heat
(d) metal has low thermal conductivity
Ans : B
-------------------------------------------------------
A set of tuning fork is arranged in ascending order of frequencies each tuning fork gives 4 beats Is with the preceding one. If frequency of first tuning fork is ' 100 Hz and the last
fork is 140 Hz, then number of tuning fork arranged will be
(a) 12 (b) 10
(c) 11 (d) 09
Ans : C
---------------------------------------------------------
Mean free path is ...
(a) directly proportional to density and inversly proportional to mass of molecule
(b) inversly proportional to density of gas and directly proportional to mass of molecule
(c) directly proportional to density of gas and mass of molecule
(d) inversly proportional to density of gas and mass of molecule
Ans : B
---------------------------------------------------------
A soap bubble of radius (1/-jc.) cm is expanded to a bubble of radius (2/A5) cm. If the surface tension of soap solution is 25 dyne/cm, then the work done will be
(a) 150 erg (b) 300 erg
(c) 600 erg (d) 1200 erg
Ans : C
---------------------------------------------------------
What will be the number of gas molecules in one litre of gas at NTP, if mass of each molecule is 3 x 105 ';ig and rms velocity at NTP is 300 mils? (Assume P = 105 N/m2)
(a) 1.11 x 1022 (b) 3.7 x 1021
( c) 7.4 x 1021 (d) 2.22 x 1022
Ans : A
---------------------------------------------------------
An athermous metal plate has coefficient of absorption 0.6. A quantity of heat 400 kcal is incident on the plate. What will be the quantity of heat reflected ?
(a) 240 kcal (b) 260 kcal
(c) 300 kcal (d) 320 kcal
Ans : B
---------------------------------------------------------
For a liquid which is rising in a capillary, the angle of contact is
(a) 180° (b) 90°
(c) obtuse (d) acute
Ans : D
---------------------------------------------------------
If we start filling empty vessel with water then frequency of air column will
(a) increase (b) decrease
(c) remains constant (d) none of these
Ans : A
---------------------------------------------------------
In a sonometer wire 50.7 kg wt is hanged from free end. Volume of weight is 0.0075 II13 and fundamental frequency of water is 260 Hz. If weight is completely immersed in water,
then the fundamental frequency will be
( a) 220 Hz (b) 240 Hz
(c) 280 Hz (d) 300 Hz
Ans : B
---------------------------------------------------------
The density and breaking steel of wire is 8.7 gcm-3 and 8.7 x 108 Nm-2 respectively. The greatest length of steel wire that can hang vertically without breaking is
(a) 10 cm (b) 10 km
(c) 100 cm (d) 1 km
Ans : B
---------------------------------------------------------
The temperature of a body decreases from 62°C to 50°C in 10 minutes. If temperature of surrounding is 26°C, the tempera-W.' reiten,the next 10 minutes will be
(a) 40°C (b) 38°C
(c) 42°C (c) 46°C
Ans : C
---------------------------------------------------------
Practically, Poisson's ratio cannot have the value
(a) 0.1 (b) 0.7
(c) 0.2 .(d) 0.5
Ans : B
---------------------------------------------------------
A particle is performing SHM. A graph of which of the following is a straight line ?
(a) Total energy against displacement
(b) potential energy against displacement
(c) acceleration against time
(d) velocity against displacement
Ans : A
---------------------------------------------------------
Heat is incident at the rate of 10 watt on a opaque body having emissivity 0.8. What is the quantity of radiant heat reflected by it in one minute ?
(a) 60J (b) 80J
(c) 100J (d) 120J
Ans : D
---------------------------------------------------------
When sugar is added in the water, the surface tension of resulting sugar solution is
(a) less than that of water
(b) same as that of water
(c) more than that of water
(d) sometimes more, sometimes less than that of water
Ans : C
---------------------------------------------------------
Hot water cools from 60° to 50° C in the first 10 minutes and to 42° C in the next 10 minutes. The temperature of surrounding is
(a) 20°C (b) 15°C
(c) 10°C (d) 30°C
Ans : C
---------------------------------------------------------
A wire is stretched by 0.5% of it's length. If Young's modulus of wire is 1.2 x 1011 N/m2, what is the energy stored per unit volume in wire ?
(a ) 1.5 x 106 J/m2 (b) 1.5 x 106 J/m2
( c ) 3 x 106 J/m2 (d) 3 x 105 J/m2
Ans : A
---------------------------------------------------------
A body is projected with 15 km/s. What is the velocity in the outer space far off the earth ? (away from it's gravitational field)
(a) 3.8 km/s ( b) 11.2 km/s
(c) 10 km/s (d) 7.8 km/s
Ans : C
---------------------------------------------------------
In Melde's experiment, the number of loops on the string changes from 5 to 4 by an addition of 0.018 kg wt. What is the initial tension ?
(a) 0.032 kg wt (b) 0.016 kg wt
(c) 0.024 kg wt (d) 0.40 kg wt
Ans : A
---------------------------------------------------------
A racing car passes a stand of race course travelling with speed of 144 km/hr. If the noise from the exhaust has a frequency of 300 Hz, what is the frequency heard by audiance as
the car approached stand if speed of sound is 340 m/s ?
(a) 300 Hz (b) 3401-17
(c) 350 Hz (d) 320Hz
Ans : B
---------------------------------------------------------
