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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.
| 901. |
A charged particle moving in a magnetic field experiences a resultant force |
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Answer» A charged particle moving in a magnetic field experiences a resultant force |
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| 902. |
Question 1Choose the incorrect statement from the following regarding magnetic lines of field.(a) The direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points(b) Magnetic field lines are closed curves(c) If magnetic field lines are parallel and equidistant, they represent zero field strength(d) Relative strength of magnetic field is shown by the degree of closeness of the field lines |
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Answer» Question 1 Choose the incorrect statement from the following regarding magnetic lines of field. (a) The direction of magnetic field at a point is taken to be the direction in which the north pole of a magnetic compass needle points (b) Magnetic field lines are closed curves (c) If magnetic field lines are parallel and equidistant, they represent zero field strength (d) Relative strength of magnetic field is shown by the degree of closeness of the field lines |
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| 903. |
Define gravitational force quantitatively. |
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Answer» Define gravitational force quantitatively. |
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| 904. |
A uniform chain of length l and mass m overhangs a smooth table with its two third part lying on the table. Find the kinetic energy of the chain as it completely slips off the table. |
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Answer» A uniform chain of length l and mass m overhangs a smooth table with its two third part lying on the table. Find the kinetic energy of the chain as it completely slips off the table.
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| 905. |
the amount of Ag deposited at the cathode when a current of 0.5 amp is passed thriugh a solution of AgNo3 for 1 hour is closest to |
| Answer» the amount of Ag deposited at the cathode when a current of 0.5 amp is passed thriugh a solution of AgNo3 for 1 hour is closest to | |
| 906. |
Salt is added to meat or pickles to preserve it. Why |
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Answer» Salt is added to meat or pickles to preserve it. Why |
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| 907. |
For a cell terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance of R=5 Ω, then determine internal resistance of cell. |
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Answer» For a cell terminal potential difference is 2.2 V when circuit is open and reduces to 1.8 V when cell is connected to a resistance of R=5 Ω, then determine internal resistance of cell. |
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| 908. |
How is the work done by a force measured when (i) force is in direction of displacement, (ii) force is at an angle to the direction of displacement? |
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Answer» How is the work done by a force measured when (i) force is in direction of displacement, (ii) force is at an angle to the direction of displacement? |
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| 909. |
Write an expression for the potential energy of a body of mass m placed at a height h above the earth surface.State the assumptions made,if any. |
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Answer» Write an expression for the potential energy of a body of mass m placed at a height h above the earth surface.State the assumptions made,if any. |
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| 910. |
Reactions in Zeolite catalysts depend on |
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Answer» Reactions in Zeolite catalysts depend on |
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| 911. |
What shape are your eye-lenses : (a) when you look at your hand ? (b) when you look at a distant tree ? |
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Answer» What shape are your eye-lenses : (a) when you look at your hand ? (b) when you look at a distant tree ? |
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| 912. |
Prove that the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole. |
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Answer» Prove that the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole. |
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| 913. |
Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen. |
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Answer» Why is the leakage of LPG detected easily although it is odourless? State the steps to be taken in case its leakage is detected in the kitchen. |
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| 914. |
When we apply a force parallel to the door, it does not rotate about the hinge. Justify this statement. |
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Answer» When we apply a force parallel to the door, it does not rotate about the hinge. Justify this statement. |
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| 915. |
The change in number of magnetic field lines induces: |
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Answer» The change in number of magnetic field lines induces: |
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| 916. |
The colour of earth wire is: |
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Answer» The colour of earth wire is: |
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| 917. |
Which of the following statement(s) is/are correct about power? 1. It is the rate of change of force. 2. It is the rate of doing work. 3. The S.I. unit of power is watt. |
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Answer» Which of the following statement(s) is/are correct about power? |
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| 918. |
A ray of light passes through an equilateral glass prism, such that the angle of incidence is equal to the angle of emergence. If the angle of emergence is 3/4 times the angle of prism, calculate the refractive index of the glass prism. |
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Answer» A ray of light passes through an equilateral glass prism, such that the angle of incidence is equal to the angle of emergence. If the angle of emergence is 3/4 times the angle of prism, calculate the refractive index of the glass prism. |
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| 919. |
Explain briefly the process of heat transfer by radiation. |
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Answer» Explain briefly the process of heat transfer by radiation. |
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| 920. |
36.A conducting wire of length l is turned in the form of a circular coil and I current is passed through it. When this coil is kept in a uniform magnetic field the torque on it will be maximum if number of turns in the coil is ?? |
| Answer» 36.A conducting wire of length l is turned in the form of a circular coil and I current is passed through it. When this coil is kept in a uniform magnetic field the torque on it will be maximum if number of turns in the coil is ?? | |
| 921. |
in a intrinsic semiconductor,band gap is1.2ev then ratio of number of charge carriers at 600 k and 300 |
| Answer» in a intrinsic semiconductor,band gap is1.2ev then ratio of number of charge carriers at 600 k and 300 | |
| 922. |
A coil having n turns and resistance R ohm is connected with a galvanometer of resistance 4R ohm. This combination is moved in a region where magnetic flux changes from W1 weber to W2 weber in t second. The induced current in the circuit is |
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Answer» A coil having n turns and resistance R ohm is connected with a galvanometer of resistance 4R ohm. This combination is moved in a region where magnetic flux changes from W1 weber to W2 weber in t second. The induced current in the circuit is |
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| 923. |
the amount of copper deposited by 1 faraday current will be maximum in an acidic solution of 1l of 1.1MCu2Cl2 2.2MCu(NO3)2 3.5M CuSO4 4.5M Cu3(PO4)3 5.10M CuF2 |
| Answer» the amount of copper deposited by 1 faraday current will be maximum in an acidic solution of 1l of 1.1MCu2Cl2 2.2MCu(NO3)2 3.5M CuSO4 4.5M Cu3(PO4)3 5.10M CuF2 | |
| 924. |
India and other developing and underdeveloped countries have huge potential in wind energy. Still most of the wind energy is not harnessed in those countries. What can be the possible reasons/reason? |
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Answer» India and other developing and underdeveloped countries have huge potential in wind energy. Still most of the wind energy is not harnessed in those countries. What can be the possible reasons/reason? |
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| 925. |
A thin symmetrical double convex lens of power P is cut into three parts, as shown in the figure. Power of A is: |
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Answer» A thin symmetrical double convex lens of power P is cut into three parts, as shown in the figure. Power of A is: |
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| 926. |
a motor car is fitted with a rear view mirror of focal length 20 cm. A second motor car 2 m broad and 21.6 m high is 6 m away from first car. Find the position of second car as seen in the mirror of the first car (1) 19 cm (2) 19.5 cm (3) 19.20 cm (4) 19.35 cm |
| Answer» a motor car is fitted with a rear view mirror of focal length 20 cm. A second motor car 2 m broad and 21.6 m high is 6 m away from first car. Find the position of second car as seen in the mirror of the first car (1) 19 cm (2) 19.5 cm (3) 19.20 cm (4) 19.35 cm | |
| 927. |
Compare and contrast bio-mass and hydro electricity as sources of energy. |
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Answer» Compare and contrast bio-mass and hydro electricity as sources of energy. |
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| 928. |
Why does latent heat not change the temperature of the thermometer when water is boiling at 1000C? |
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Answer» Why does latent heat not change the temperature of the thermometer when water is boiling at 1000C? |
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| 929. |
A cell is used to : (a) measure current in a circuit (b) provide current in a circuit (c) limit current in a circuit (d) prevent current in a circuit |
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Answer» A cell is used to : (a) measure current in a circuit (b) provide current in a circuit (c) limit current in a circuit (d) prevent current in a circuit |
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| 930. |
The focal length of the convex mirror is 20 cm, its radius of curvature will be: |
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Answer» The focal length of the convex mirror is 20 cm, its radius of curvature will be: |
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| 931. |
The ciliary muscles in an eye change the focal length of an eye lens to focus distant or nearby objects clearly, this ability of an eye is known as the power of an eye. |
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Answer» The ciliary muscles in an eye change the focal length of an eye lens to focus distant or nearby objects clearly, this ability of an eye is known as the power of an eye. |
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| 932. |
With reference to the Project-75 India (Project-75 I), consider the following statements: 1.It is a follow-on of the Project 75 Kalvari-class submarines for the Indian Navy. 2.Under this project, the Indian Navy intends to build six nuclear-powered submarines in Indian shipyards. 3.It is a part of a 30-year submarine building plan that ends in 2030. Which of the statements given above is/are correct? परियोजना -75 इंडिया (प्रोजेक्ट -75 I) के संदर्भ में, निम्नलिखित कथनों पर विचार करें। 1. यह भारतीय नौसेना के लिए परियोजना-75 कलवरी-श्रेणी की पनडुब्बियों का अनुवर्ती है। 2. परियोजना के तहत, भारतीय नौसेना का उद्देश्य भारतीय शिपयार्डों में छह परमाणु ऊर्जा चलित पनडुब्बियां बनाने का है। 3.यह 30 वर्षीय पनडुब्बी निर्माण योजना का एक हिस्सा है जो 2030 में समाप्त होगा। ऊपर दिए गए कथनों में से कौन सा/से सही है / हैं? |
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Answer» With reference to the Project-75 India (Project-75 I), consider the following statements: 1.It is a follow-on of the Project 75 Kalvari-class submarines for the Indian Navy. 2.Under this project, the Indian Navy intends to build six nuclear-powered submarines in Indian shipyards. 3.It is a part of a 30-year submarine building plan that ends in 2030. Which of the statements given above is/are correct? परियोजना -75 इंडिया (प्रोजेक्ट -75 I) के संदर्भ में, निम्नलिखित कथनों पर विचार करें।
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| 933. |
Power dissipated in an LCR series circuit connectedto an a,c source of emf ε is |
| Answer» Power dissipated in an LCR series circuit connectedto an a,c source of emf ε is | |
| 934. |
A short circuited college placed in the time magnetic field electric power dissipated due to the current induced in the coil of the number of the turns out to be |
| Answer» A short circuited college placed in the time magnetic field electric power dissipated due to the current induced in the coil of the number of the turns out to be | |
| 935. |
MagnetA wire of length L m carrying a current / A, is bent inthe form of a circle. The magnetic moment is |
| Answer» MagnetA wire of length L m carrying a current / A, is bent inthe form of a circle. The magnetic moment is | |
| 936. |
on the concave surface of concavo convex lens a liquid of r.i n2 is poured. the radii of convex and concave surfaces of lens are R1 and R2 resp. the r.i. of material of lens is n1.for which combination of n1 and n2 , the whole system behaves as a diverging lens |
| Answer» on the concave surface of concavo convex lens a liquid of r.i n2 is poured. the radii of convex and concave surfaces of lens are R1 and R2 resp. the r.i. of material of lens is n1.for which combination of n1 and n2 , the whole system behaves as a diverging lens | |
| 937. |
If scattering particles are 56 for 90∘ angle then this will be at 60∘ angle. |
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Answer» If scattering particles are 56 for 90∘ angle then this will be at 60∘ angle. |
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| 938. |
a current carrying conductor is placed perpendicular to the uniform magnetic field. what happens to displacement of the conductor if strength of the current increases |
| Answer» a current carrying conductor is placed perpendicular to the uniform magnetic field. what happens to displacement of the conductor if strength of the current increases | |
| 939. |
Calculate the resistivity of an aluminium 1mm, if the resistivity of aluminium is 3.2×10 -8 ohm m and it length is 4km |
| Answer» Calculate the resistivity of an aluminium 1mm, if the resistivity of aluminium is 3.2×10 -8 ohm m and it length is 4km | |
| 940. |
A convex lens produces a real image at a distance of 60 cm from it. Find the power of the lens if the size of image is equal to that of the object. |
| Answer» A convex lens produces a real image at a distance of 60 cm from it. Find the power of the lens if the size of image is equal to that of the object. | |
| 941. |
39. One mole of water vapourises against 1atm pressure and 373K temperature then calculate work done (assume ideal behaviour of water vapour) (1)3157 joule (2)3090 joule (3)zero (4)information incomplete. |
| Answer» 39. One mole of water vapourises against 1atm pressure and 373K temperature then calculate work done (assume ideal behaviour of water vapour) (1)3157 joule (2)3090 joule (3)zero (4)information incomplete. | |
| 942. |
The gravitational field in a region is given by g(vector)=(5N/kg i^) + (12N/kg j^). The change in the gravitational potential energy of a particle on mass 2 kg when it is taken from the origin to a point (7m,-3m) is |
| Answer» The gravitational field in a region is given by g(vector)=(5N/kg i^) + (12N/kg j^). The change in the gravitational potential energy of a particle on mass 2 kg when it is taken from the origin to a point (7m,-3m) is | |
| 943. |
Same current I is flowing in three infinitely long wire along x y z direction The magnetic field at a point (0,0,-a) would be |
| Answer» Same current I is flowing in three infinitely long wire along x y z direction The magnetic field at a point (0,0,-a) would be | |
| 944. |
If G is universal gravitation constant and g is acceleration due to gravity, then dimensions ofwill be(1) \lbrack M-1 L2(2) \lbrack M-1 L\rbrack(3) \lbrack M-2 L\rbrack(4) \lbrack M-1 L-21 |
| Answer» If G is universal gravitation constant and g is acceleration due to gravity, then dimensions ofwill be(1) \lbrack M-1 L2(2) \lbrack M-1 L\rbrack(3) \lbrack M-2 L\rbrack(4) \lbrack M-1 L-21 | |
| 945. |
In equation F=A+ t^2/ B ,find the dimensions of A and B given that they both are unknown,and F represents force and t represents time. Based on law of homoginit |
| Answer» In equation F=A+ t^2/ B ,find the dimensions of A and B given that they both are unknown,and F represents force and t represents time. Based on law of homoginit | |
| 946. |
For the symbol H, D and T tabulate three subatomic particles found in each of them |
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Answer» For the symbol H, D and T tabulate three subatomic particles found in each of them |
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| 947. |
Suggest measures in following situations.The use of fossil fuels in villages. |
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Answer» Suggest measures in following situations. The use of fossil fuels in villages. |
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| 948. |
Why the heat changes are generally called enthalpy changes rather than internal energy? |
| Answer» Why the heat changes are generally called enthalpy changes rather than internal energy? | |
| 949. |
Why current is constant and voltage is different in series circuit ?? |
| Answer» Why current is constant and voltage is different in series circuit ?? | |
| 950. |
what is 1mol |
| Answer» what is 1mol | |
