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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 2851. |
Give reasons. (a) A tabla player tightens or loosens the bands tying down the membrane. (b) We hear thunder long after we have seen the flash of lightning. (c) A surface is necessary for an echo to be heard. |
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Answer» Give reasons. (a) A tabla player tightens or loosens the bands tying down the membrane. (b) We hear thunder long after we have seen the flash of lightning. (c) A surface is necessary for an echo to be heard. |
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| 2852. |
When 1 g ofliquid naphthalene (C10H8) solidifies, 149 J of heat is evolved. Calculate the heat of fusion of naphthalene. |
| Answer» When 1 g ofliquid naphthalene (C10H8) solidifies, 149 J of heat is evolved. Calculate the heat of fusion of naphthalene. | |
| 2853. |
Provide the different condition for refraction through spherical surfaces? |
| Answer» Provide the different condition for refraction through spherical surfaces? | |
| 2854. |
What is the numerical value of ratio of distance to displacement? |
| Answer» What is the numerical value of ratio of distance to displacement? | |
| 2855. |
a machine gun is mounted on an armoured car moving with a speed of 20m/s. The gun can point against the direction of motion of car.The muzzle speed of bullet is equal to speed of sound in air i.e.,340m/s. The time difference between bullets actually reaching and sound of firing reaching at a target 500 m away from car at the ins†an t of firing is how much |
| Answer» a machine gun is mounted on an armoured car moving with a speed of 20m/s. The gun can point against the direction of motion of car.The muzzle speed of bullet is equal to speed of sound in air i.e.,340m/s. The time difference between bullets actually reaching and sound of firing reaching at a target 500 m away from car at the ins†an t of firing is how much | |
| 2856. |
In an electroscope, how do the charge from the charged object transfers to the foil strips? [1 MARK] |
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Answer» In an electroscope, how do the charge from the charged object transfers to the foil strips? [1 MARK] |
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| 2857. |
Instrument which shows direction of winds is |
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Answer» Instrument which shows direction of winds is |
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| 2858. |
The odometer of a car reads 3000 km at the start of a trip and 3400 km at the end of the trip. If the trip took 8 hr, calculate the average speed of the car in m min−1. |
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Answer» The odometer of a car reads 3000 km at the start of a trip and 3400 km at the end of the trip. If the trip took 8 hr, calculate the average speed of the car in m min−1. |
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| 2859. |
To an astronaut space appears to be of which colour??? |
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Answer» To an astronaut space appears to be of which colour??? |
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| 2860. |
The temperature of shimla recorded on monday was 298 kelvin.In degree celsius it is equal to |
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Answer» The temperature of shimla recorded on monday was 298 kelvin.In degree celsius it is equal to |
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| 2861. |
The centre of the sun consists of gases whose average molecular weight is 2. If the density of the gases is 2.73 x 103kg/ m3 at a pressure of 1.12 x 109 atm, the temperature at the centre of the Sun is (assuming ideal behavior) |
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Answer» The centre of the sun consists of gases whose average molecular weight is 2. If the density of the gases is 2.73 x 103kg/ m3 at a pressure of 1.12 x 109 atm, the temperature at the centre of the Sun is (assuming ideal behavior) |
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| 2862. |
{ 23. }40 g water at }50^° C is mixed with }20g ice at }-20^° C . }} The final temperature of mixture is }{ (1) }0^° C}{ (3) }3.33^° C |
| Answer» { 23. }40 g water at }50^° C is mixed with }20g ice at }-20^° C . }} The final temperature of mixture is }{ (1) }0^° C}{ (3) }3.33^° C | |
| 2863. |
Electric field at point P (2,3,4) due to charge 1 nano coulomb which is placed at (1,2,3) is Ex component of electric field at point P is |
| Answer» Electric field at point P (2,3,4) due to charge 1 nano coulomb which is placed at (1,2,3) is Ex component of electric field at point P is | |
| 2864. |
Name the petroleum product used as fuel for stoves, lamps and jet aircrafts. |
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Answer» Name the petroleum product used as fuel for stoves, lamps and jet aircrafts. |
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| 2865. |
Time period of oscillations of a particle along a tunnel inside the earth at a distance x from the centre |
| Answer» Time period of oscillations of a particle along a tunnel inside the earth at a distance x from the centre | |
| 2866. |
A train moves from A to B such that half of the dis†an ce it moves the speed V1 now for rest of the journey it moves with the speed V2 for half of the time and V3 Next half of the time find Average speed? |
| Answer» A train moves from A to B such that half of the dis†an ce it moves the speed V1 now for rest of the journey it moves with the speed V2 for half of the time and V3 Next half of the time find Average speed? | |
| 2867. |
Define side mirror |
| Answer» Define side mirror | |
| 2868. |
Which of the following time periods of a sound wave would result in the highest pitch? |
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Answer» Which of the following time periods of a sound wave would result in the highest pitch? |
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| 2869. |
What is an electric circuit? |
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Answer» What is an electric circuit? |
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| 2870. |
Human body is a/an ___ (conductor/insulator). |
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Answer» Human body is a/an |
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| 2871. |
Question 12Gravitational force on the surface of the moon is only 16 as strong as gravitational force on the earth. What is the weight in newtons of a 10 kg object on the moon and on the Earth? |
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Answer» Question 12 Gravitational force on the surface of the moon is only 16 as strong as gravitational force on the earth. What is the weight in newtons of a 10 kg object on the moon and on the Earth? |
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| 2872. |
Let r1(t) = 3t i cap + 4t^2 j cap and r2(t) = 4t^2 i cap + 3t j cap represent the positions of particles 1 and 2, respectively as functions of time t; r1(t) and r2(t) are in metres and t is in seconds. The relative speed of the two particles at the instant t = 1 s, will be- (1) 1 m/s (2) 3root2 (3) 5root2 (4) 7root2 |
| Answer» Let r1(t) = 3t i cap + 4t^2 j cap and r2(t) = 4t^2 i cap + 3t j cap represent the positions of particles 1 and 2, respectively as functions of time t; r1(t) and r2(t) are in metres and t is in seconds. The relative speed of the two particles at the instant t = 1 s, will be- (1) 1 m/s (2) 3root2 (3) 5root2 (4) 7root2 | |
| 2873. |
Temperature at which both the Celsius and Fahrenheit scales show the same reading? |
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Answer» Temperature at which both the Celsius and Fahrenheit scales show the same reading? |
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| 2874. |
Compute the fractional change in volume of a glass slab, when subjected to a uniform pressure of 1.013* 10^6 pa. Bulk modulus of elasticity of glass= 37* 10^9 |
| Answer» Compute the fractional change in volume of a glass slab, when subjected to a uniform pressure of 1.013* 10^6 pa. Bulk modulus of elasticity of glass= 37* 10^9 | |
| 2875. |
You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet. |
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Answer» You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet. |
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| 2876. |
While looking at a mirror, we notice that a ring on the finger of our left hand appears to be in the finger of the right hand of our image because of |
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Answer» While looking at a mirror, we notice that a ring on the finger of our left hand appears to be in the finger of the right hand of our image because of |
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| 2877. |
111.Two mutually perpendicular long straight wires carrying uniformly distributed charges o f1 and λ2 |
| Answer» 111.Two mutually perpendicular long straight wires carrying uniformly distributed charges o f1 and λ2 | |
| 2878. |
The lowest temperature of a day generally occurs early in the_ |
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Answer» The lowest temperature of a day generally occurs early in the_ |
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| 2879. |
a boat floating in a†an k is carrying passengers .if the passengers drink some water,what will happen to the level of water |
| Answer» a boat floating in a†an k is carrying passengers .if the passengers drink some water,what will happen to the level of water | |
| 2880. |
Permanent winds are formed due to |
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Answer» Permanent winds are formed due to |
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| 2881. |
A electromagnetic wave in vacuum has the electric and magnetic fields and which are always perpendicular to each other. The direction of polarization is given by and wave propogation by then |
| Answer» A electromagnetic wave in vacuum has the electric and magnetic fields and which are always perpendicular to each other. The direction of polarization is given by and wave propogation by then | |
| 2882. |
Write equation for longitudinal wave |
| Answer» Write equation for longitudinal wave | |
| 2883. |
Anil's father has three different wires which vary in lengths. J: 12 cm K: 2.8 m L: 203 mm Which of the following options shows the arrangement of the wires from the longest to the shortest? |
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Answer» Anil's father has three different wires which vary in lengths. |
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| 2884. |
The thin wire that gives off light in a bulb is known as: |
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Answer» The thin wire that gives off light in a bulb is known as: |
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| 2885. |
Choose the correct battery representation (from the end X to the end Y) for the circuit in which three bulbs A, B and C are connected as shown. |
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Answer» Choose the correct battery representation (from the end X to the end Y) for the circuit in which three bulbs A, B and C are connected as shown. |
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| 2886. |
Two sound sources emitting plane waves seperated by 12 meter vibrates according to law y1=3sin 4πt and y2=4sin 4πt respectively . A point in the medium is at a position 8 m from first source and 4m from second on the line joining two sources. The source send out waves of velocity 32 m/s. Find equation of motion of the particles. (y1,y2 are n centimeter and t is in second) |
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Answer» Two sound sources emitting plane waves seperated by 12 meter vibrates according to law y1=3sin 4πt and y2=4sin 4πt respectively . A point in the medium is at a position 8 m from first source and 4m from second on the line joining two sources. The source send out waves of velocity 32 m/s. Find equation of motion of the particles. (y1,y2 are n centimeter and t is in second) |
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| 2887. |
A gas follows a process TV^{n-1}=cons†an t. Find the bulk modulus of the gas for the process. |
| Answer» A gas follows a process TV^{n-1}=cons†an t. Find the bulk modulus of the gas for the process. | |
| 2888. |
A car covers a distance of 60k meters in an hour. Calculate the speed of the car in m/sec. |
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Answer» A car covers a distance of 60k meters in an hour. Calculate the speed of the car in m/sec. |
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| 2889. |
n1 electrons/sec passes through a given cross-section towards right with a velocity v1 and n2 protons/sec passes through the same cross-section with velocity v2 in the same direction, the current through a given cross-section will be :(Given: n1=1.5×1010, n2=1010 and charge on electron=1.6×10−19 C) |
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Answer» n1 electrons/sec passes through a given cross-section towards right with a velocity v1 and n2 protons/sec passes through the same cross-section with velocity v2 in the same direction, the current through a given cross-section will be : (Given: n1=1.5×1010, n2=1010 and charge on electron=1.6×10−19 C) |
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| 2890. |
A cylindrical steel rod, 0.01 m in diameter and 0.2 m in length is first heated to 750∘Cand then immersed in water bath at 100∘C. The heat transfer coefficient is 250 W/m2K. The density, specific heat and thermal conductivity of steel are ρ=7801 kg/m3,c=473 J/kgK, and k=43 W/mK, respectively. The time required for the rod to reach 300∘C is seconds |
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Answer» A cylindrical steel rod, 0.01 m in diameter and 0.2 m in length is first heated to 750∘Cand then immersed in water bath at 100∘C. The heat transfer coefficient is 250 W/m2K. The density, specific heat and thermal conductivity of steel are ρ=7801 kg/m3,c=473 J/kgK, and k=43 W/mK, respectively. The time required for the rod to reach 300∘C is |
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| 2891. |
Explain magnetisation. Illustrate the way by which a piece of iron bar can be magnetised. |
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Answer» Explain magnetisation. Illustrate the way by which a piece of iron bar can be magnetised. |
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| 2892. |
If two triangles are congruent then the perimeter of one triangle is equal to ______ of the other triangle. |
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Answer» If two triangles are congruent then the perimeter of one triangle is equal to ______ of the other triangle. |
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| 2893. |
Which of the following statements are correct regarding waves? |
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Answer» Which of the following statements are correct regarding waves? |
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| 2894. |
The moon is observed from two diametrically extremes A and B on earth. The angle of parallax is found to be 1 degree54". If the diameter of the earth is about 1.276×10^7m, estimate the distance of the Moon from the earth. |
| Answer» The moon is observed from two diametrically extremes A and B on earth. The angle of parallax is found to be 1 degree54". If the diameter of the earth is about 1.276×10^7m, estimate the distance of the Moon from the earth. | |
| 2895. |
Answer the following questions in brief.A. A plastic cube is released in water. Will it sink of come to the surface of watet?B. Why do the load carrying heavy vehicles have large number of wheels?C. How much pressure do we carry on our heads? why don't we feel it? |
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Answer» Answer the following questions in brief. A. A plastic cube is released in water. Will it sink of come to the surface of watet? B. Why do the load carrying heavy vehicles have large number of wheels? C. How much pressure do we carry on our heads? why don't we feel it? |
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| 2896. |
What is difference between a hurricane and a typhoon |
| Answer» What is difference between a hurricane and a typhoon | |
| 2897. |
To expel hot air out of the kitchen, A has an exhaust fan fitted on the window of her kitchen and B has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? |
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Answer» To expel hot air out of the kitchen, A has an exhaust fan fitted on the window of her kitchen and B has a similar exhaust fan fitted on the wall near the ceiling of her kitchen. Which of the exhaust fan will expel the hot air more effectively? |
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| 2898. |
Which car is moving at a higher speed? |
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Answer» Which car is moving at a higher speed?
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| 2899. |
a carpet of mass m is folded in radius R.find its linear velocity when it opens up to R/2 radius |
| Answer» a carpet of mass m is folded in radius R.find its linear velocity when it opens up to R/2 radius | |
| 2900. |
A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. (You may try to experiment first and then answer these questions). |
Answer» A bulb is kept burning just right above the following solids. Name the shape of the shadows obtained in each case. Attempt to give a rough sketch of the shadow. (You may try to experiment first and then answer these questions). |
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