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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.
| 1901. |
Mention the advantages and disadvantages of ultrasonography. |
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Answer» Mention the advantages and disadvantages of ultrasonography. |
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| 1902. |
A fruit is dropped from a height of 20 m. Find the velocity with which it would hit the ground. |
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Answer» A fruit is dropped from a height of 20 m. Find the velocity with which it would hit the ground. |
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| 1903. |
Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare (i) their resistances, (ii) their specific resistance. |
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Answer» Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare (i) their resistances, (ii) their specific resistance. |
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| 1904. |
Total number of electrons with clockwise spin, forMn in the orbitals with n + l = 3,(1) 2(2) 4(3)6 (4) |
| Answer» Total number of electrons with clockwise spin, forMn in the orbitals with n + l = 3,(1) 2(2) 4(3)6 (4) | |
| 1905. |
It is said that number of electrons ejected depends on intensity of light but do not depends on frequency of light.But when red light of high intensity strikes potassium metal surface it can't eject electrons.When yellow light having low intensity and high frequency strikes the potassium metal surface electrons ejected.Why? |
| Answer» It is said that number of electrons ejected depends on intensity of light but do not depends on frequency of light.But when red light of high intensity strikes potassium metal surface it can't eject electrons.When yellow light having low intensity and high frequency strikes the potassium metal surface electrons ejected.Why? | |
| 1906. |
A wavefront AB is incident on the surface as shown in the figure. What is the angle of incidence? |
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Answer» A wavefront AB is incident on the surface as shown in the figure. What is the angle of incidence? |
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| 1907. |
In a cyclotron,why we use a high frequency alternating voltage for the dees. What will happen in case of a DC connection or if the frequency is low? |
| Answer» In a cyclotron,why we use a high frequency alternating voltage for the dees. What will happen in case of a DC connection or if the frequency is low? | |
| 1908. |
You see them all in the sky. Fill in the blanks by choosing words from the box. stars sun cloud rainbow moon Disclaimer: Kindly refer the textbook for the images. |
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Answer» You see them all in the sky. Fill in the blanks by choosing words from the box.
Disclaimer: Kindly refer the textbook for the images. |
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| 1909. |
The reac†an ce of 25 μ F capacitor at the AC frequencey of 4000 Hz is? |
| Answer» The reac†an ce of 25 μ F capacitor at the AC frequencey of 4000 Hz is? | |
| 1910. |
A. Whom should I Pair with? Group A Group B a. Temperature of a healthy human body 296 K b. Boiling point of water 98.6∘F c. Room temperature 0∘C d. Freezing point of water 212∘F B. Who is telling the truth?a. The temperature of a substance is measured in joules.b.Heat flows from an object at higher temperature to an object at lower temperature.c. Joule is the unit of heat.d. Objects contract on heating.e. Atoms of a solid are free.f. The average kinetic energy of atoms in a hot objects is less than the average kinetic energy of atoms in a cold objects.C. You will find if you search.a. A thermometer is used to measure............... . b. The apparatus used to measure heat is called a..................... .c. Temperature is the measures of the............................ Kinetic energy of the atoms in a substance.d. The heat contained in a substannce is the measures of the....................... kinetic energy of atoms in the substance. |
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Answer» A. Whom should I Pair with?
B. Who is telling the truth? a. The temperature of a substance is measured in joules. b.Heat flows from an object at higher temperature to an object at lower temperature. c. Joule is the unit of heat. d. Objects contract on heating. e. Atoms of a solid are free. f. The average kinetic energy of atoms in a hot objects is less than the average kinetic energy of atoms in a cold objects. C. You will find if you search. a. A thermometer is used to measure............... . b. The apparatus used to measure heat is called a..................... . c. Temperature is the measures of the............................ Kinetic energy of the atoms in a substance. d. The heat contained in a substannce is the measures of the....................... kinetic energy of atoms in the substance. |
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| 1911. |
In displacement method, there are two positions of a lens for which we get clear image . First position of lens is at 40cm from object and second is at 80cm , the focal length of lens i |
| Answer» In displacement method, there are two positions of a lens for which we get clear image . First position of lens is at 40cm from object and second is at 80cm , the focal length of lens i | |
| 1912. |
nta voltameter of 998 resistenceis connected to cell of emf 2volts,internal resistence 2ohm.Error in measuring emf?n |
| Answer» nta voltameter of 998 resistenceis connected to cell of emf 2volts,internal resistence 2ohm.Error in measuring emf?n | |
| 1913. |
parallel to the princpar64. A converging lens of focal length 15 cm and a convergingLPmirror of focal length 10 cm are placed 50 cm apart withcommon principal axis. A point source isbetween the lens and the mirror at a distance of 40 cmfrom the lens. Find the locations of the two imagesformed. |
| Answer» parallel to the princpar64. A converging lens of focal length 15 cm and a convergingLPmirror of focal length 10 cm are placed 50 cm apart withcommon principal axis. A point source isbetween the lens and the mirror at a distance of 40 cmfrom the lens. Find the locations of the two imagesformed. | |
| 1914. |
ntwhat is right hand thumb rule ? what does it actually mean ?n ntn |
| Answer» ntwhat is right hand thumb rule ? what does it actually mean ?n ntn | |
| 1915. |
12.A conducting wheel in which there are four rods of length l as shown in figure is rotating with angular velocity omega in a uniform magnetic field B . The induced potential difference between its center and the rim will be?? |
| Answer» 12.A conducting wheel in which there are four rods of length l as shown in figure is rotating with angular velocity omega in a uniform magnetic field B . The induced potential difference between its center and the rim will be?? | |
| 1916. |
(a) What kind of energy change takes place when a magnet is moved towards a coil having a galvanometer between its ends ? (b) Name the phenomenon. |
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Answer» (a) What kind of energy change takes place when a magnet is moved towards a coil having a galvanometer between its ends ? |
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| 1917. |
State and define the S.I. unit of work. |
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Answer» State and define the S.I. unit of work. |
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| 1918. |
The critical angle of light going from medium A to medium B is θ, The speed of light in medium A is v. The speed of light in medium B is |
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Answer» The critical angle of light going from medium A to medium B is θ, The speed of light in medium A is v. The speed of light in medium B is
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| 1919. |
What are the uses of coal tar? |
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Answer» What are the uses of coal tar? |
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| 1920. |
The stars appear higher from horizon than they actually are. Explain why it is so. |
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Answer» The stars appear higher from horizon than they actually are. Explain why it is so. |
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| 1921. |
A machine raises a load of 750 N through a height of 16 m in 5 s.Calculate: (i) the energy spent by the machine, (ii) the power of the machine if it is 100% efficient. |
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Answer» A machine raises a load of 750 N through a height of 16 m in 5 s.Calculate: (i) the energy spent by the machine, (ii) the power of the machine if it is 100% efficient. |
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| 1922. |
A point object is placed at a dis†an ce of 30cm from a convex lens of focal length 20cm On the other side of the lens a convex mirror of focal length 10 cm is placed,such that final image of the object coincides with object itself The dis†an ce of mirror from lens is 1.30cm 2.40cm 3.50cm 4.70 |
| Answer» A point object is placed at a dis†an ce of 30cm from a convex lens of focal length 20cm On the other side of the lens a convex mirror of focal length 10 cm is placed,such that final image of the object coincides with object itself The dis†an ce of mirror from lens is 1.30cm 2.40cm 3.50cm 4.70 | |
| 1923. |
Are the light in your house wired in series? |
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Answer» Are the light in your house wired in series? |
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| 1924. |
The angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of the prism. The angle of the prism is (cos 41° = 0.75) |
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Answer» The angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of the prism. The angle of the prism is (cos 41° = 0.75) |
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| 1925. |
Why the object lens is smaller in compound microscope compare to astronomical telescope? |
| Answer» Why the object lens is smaller in compound microscope compare to astronomical telescope? | |
| 1926. |
Find the voltage across AB in the given circuit. Assume that diode is ideal. |
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Answer» Find the voltage across AB in the given circuit. Assume that diode is ideal. |
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| 1927. |
Rainbow is caused due to: |
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Answer» Rainbow is caused due to: |
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| 1928. |
How does the relation ∆p=∆(mv ) remains true whether mass remains constant or not? |
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Answer» How does the relation ∆p=∆(mv ) remains true whether mass remains constant or not? |
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| 1929. |
Is soul is an energy? |
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Answer» Is soul is an energy? |
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| 1930. |
In a thin prism of glass (refractive index 1.5), which of the following relations between the angle of minimum deviation δm and angle of refraction r will be correct ? |
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Answer» In a thin prism of glass (refractive index 1.5), which of the following relations between the angle of minimum deviation δm and angle of refraction r will be correct ? |
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| 1931. |
Which of the following is not a property of hydrocarbons? |
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Answer» Which of the following is not a property of hydrocarbons? |
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| 1932. |
what is node? |
| Answer» what is node? | |
| 1933. |
how to calculate electric field due to disc |
| Answer» how to calculate electric field due to disc | |
| 1934. |
what is electric flux through a ring? |
| Answer» what is electric flux through a ring? | |
| 1935. |
The pH range most favourable for life of fresh water plants and animals is: |
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Answer» The pH range most favourable for life of fresh water plants and animals is: |
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| 1936. |
Do you like to look at yourself in the mirror? What do you think about at such times? Have you ever seen a dog, a cat or a bird look into a mirror? What do you think it sees? |
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Answer» Do you like to look at yourself in the mirror? What do you think about at such times? Have you ever seen a dog, a cat or a bird look into a mirror? What do you think it sees? |
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| 1937. |
(a) For the arrangement shown below, what should be done to change the direction in which the magnetic needle gets deflected?(b) What is the pattern of magnetic field around a current carrying conductor? [2 MARKS] |
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Answer» (a) For the arrangement shown below, what should be done to change the direction in which the magnetic needle gets deflected?
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| 1938. |
The potential difference maintained between the live wire and neutral wire in India is |
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Answer» The potential difference maintained between the live wire and neutral wire in India is |
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| 1939. |
is it correct that solonied has greater magnetic field at the Centre. Explain how |
| Answer» is it correct that solonied has greater magnetic field at the Centre. Explain how | |
| 1940. |
22.Assertion =if a unit north pole rotates around a current carrying wires then work has to be done. reason =magnetic field produced by a current is always non conservative in nature |
| Answer» 22.Assertion =if a unit north pole rotates around a current carrying wires then work has to be done. reason =magnetic field produced by a current is always non conservative in nature | |
| 1941. |
What is the reason for the twinkling of stars? |
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Answer» What is the reason for the twinkling of stars? |
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| 1942. |
write the role of calcium in blood clottin |
| Answer» write the role of calcium in blood clottin | |
| 1943. |
Does y = Asinkxsinwt represent wave equation? Explain how. |
| Answer» Does y = Asinkxsinwt represent wave equation? Explain how. | |
| 1944. |
In electric heating appliances the material of the heating element is __ |
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Answer» In electric heating appliances the material of the heating element is |
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| 1945. |
Between Celsius and Fahrenheit scales which one is more convenient to use? Why? |
| Answer» Between Celsius and Fahrenheit scales which one is more convenient to use? Why? | |
| 1946. |
(a) Show using a proper diagram how unpolarised light can be linearly polarised by reflection from a transparent glass surface.(b) The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having refractive index 3423 , placed in water having refractive index 43. Will this ray suffer total internal reflection on striking the face AC? Justify your answer. |
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Answer» (a) Show using a proper diagram how unpolarised light can be linearly polarised by reflection from a transparent glass surface. (b) The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having refractive index 3423 , placed in water having refractive index 43. Will this ray suffer total internal reflection on striking the face AC? Justify your answer.  |
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| 1947. |
If all rays falling on a convex lens are parallel to the principal axis of the lens, what happens to them after they pass through the lens? |
| Answer» If all rays falling on a convex lens are parallel to the principal axis of the lens, what happens to them after they pass through the lens? | |
| 1948. |
A wire of length 0.24 m and diameter 3.0×10−5 m has a resistance of 160Ω. Calculate the resistivity of the material.? |
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Answer» A wire of length 0.24 m and diameter 3.0×10−5 m has a resistance of 160Ω. Calculate the resistivity of the material.? |
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| 1949. |
cube of this metal of side 0.01 m is drawn intoa uniform wire of length 3m find the resistance if resistivity is 0.5*10-2 |
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Answer» cube of this metal of side 0.01 m is drawn into a uniform wire of length 3m find the resistance if resistivity is 0.5*10-2 |
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| 1950. |
Fill in the blanks to complete the following sentences: (a) When light travels from a rarer to a denser medium, its speed ............. (b) When light travels from a denser to a rarer medium, its speed.......... (c) The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be.................... |
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Answer» Fill in the blanks to complete the following sentences: (a) When light travels from a rarer to a denser medium, its speed ............. (b) When light travels from a denser to a rarer medium, its speed.......... (c) The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass will be.................... |
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