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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.
| 251. |
If the speed of light is 3.0 ×108 m s-1, calculate the distance covered by light in 2.00 ns. |
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Answer» If the speed of light is 3.0 ×108 m s-1, calculate the distance covered by light in 2.00 ns. |
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| 252. |
What is the average speed of second hand of a wrist watch? Given radius of the watch is 'r' metre. |
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Answer» What is the average speed of second hand of a wrist watch? Given radius of the watch is 'r' metre.
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| 253. |
At acertain location in Africa, a compass points 12º west of thegeographic north. The north tip of the magnetic needle of a dipcircle placed in the plane of magnetic meridian points 60º abovethe horizontal. The horizontal component of the earth’s fieldis measured to be 0.16 G. Specify the direction and magnitude of theearth’s field at the location. |
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Answer» At a |
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| 254. |
15. Find workdone to pull the chain from point A to point C where point A is one edge of the table and point C is its another edge. The length of chain is L and mass is M. The length L of chain is hanging from point A. The coefficient of friction on table is mu. |
| Answer» 15. Find workdone to pull the chain from point A to point C where point A is one edge of the table and point C is its another edge. The length of chain is L and mass is M. The length L of chain is hanging from point A. The coefficient of friction on table is mu. | |
| 255. |
While measuring length using a metre scale, the position of the eye does not affect the measurement. True or false? |
| Answer» While measuring length using a metre scale, the position of the eye does not affect the measurement. True or false? | |
| 256. |
What kind of eclipse is observed when the sun, moon, and earth are in a straight line with the earth in the middle? |
| Answer» What kind of eclipse is observed when the sun, moon, and earth are in a straight line with the earth in the middle? | |
| 257. |
Four identical wooden blocks are slid with same initial velocities on four different horizontal surfaces - sand, concrete, clay and ice. On which of these surfaces, will the distance travelled be maximum? |
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Answer» Four identical wooden blocks are slid with same initial velocities on four different horizontal surfaces - sand, concrete, clay and ice. On which of these surfaces, will the distance travelled be maximum? |
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| 258. |
A drop of olive oil of radius 0.30mm spreads into a nearly circular film of radius 12cm on the water surface.Estimatethe molecular size of olive oil |
| Answer» A drop of olive oil of radius 0.30mm spreads into a nearly circular film of radius 12cm on the water surface.Estimatethe molecular size of olive oil | |
| 259. |
Can light also be defined as a particle, other than being a wave? |
| Answer» Can light also be defined as a particle, other than being a wave? | |
| 260. |
8. The ratio of time taken by ice on the surface ofponds or lakes to become triple the thickness is |
| Answer» 8. The ratio of time taken by ice on the surface ofponds or lakes to become triple the thickness is | |
| 261. |
What happens when the net force applied on an object is opposite to the direction of its motion? |
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Answer» What happens when the net force applied on an object is opposite to the direction of its motion? |
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| 262. |
Question 6 The distance between Radha's home and her school is 3250 m. Express this distance in km. |
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Answer» Question 6 The distance between Radha's home and her school is 3250 m. Express this distance in km. |
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| 263. |
Magnetic force acting on the charged particle projected perpendicular to magnetic field isproportional tor^n,where r is radius of circular path.Find n. |
| Answer» Magnetic force acting on the charged particle projected perpendicular to magnetic field isproportional tor^n,where r is radius of circular path.Find n. | |
| 264. |
15. If A is astronomical unit, L is light year and P isparsec then which of the following is true?(1) A> L> P(2) A> P L(4) L> A> P(3) P> L> A |
| Answer» 15. If A is astronomical unit, L is light year and P isparsec then which of the following is true?(1) A> L> P(2) A> P L(4) L> A> P(3) P> L> A | |
| 265. |
Name the only planet which has not been named after a mythological deity? |
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Answer» Name the only planet which has not been named after a mythological deity? |
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| 266. |
intermolecular forces and intermolecular spaces relation |
| Answer» intermolecular forces and intermolecular spaces relation | |
| 267. |
Answer the following questions in your own words.(a) Which types of motion are seen in birds flying in the sky ?(b) Write in detail about your experience of various types of motion while riding a bicycle on a road. |
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Answer» Answer the following questions in your own words. (a) Which types of motion are seen in birds flying in the sky ? (b) Write in detail about your experience of various types of motion while riding a bicycle on a road. |
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| 268. |
What is the temperature on Galaxy |
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Answer» What is the temperature on Galaxy |
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| 269. |
A particle is rotated in a vertical circle by connecting it to the end of a massless rod of length l and keeping the other end of rood fixed. find the minimum speed of the particle when rod is horizontzl fr which particle completes the circ |
| Answer» A particle is rotated in a vertical circle by connecting it to the end of a massless rod of length l and keeping the other end of rood fixed. find the minimum speed of the particle when rod is horizontzl fr which particle completes the circ | |
| 270. |
Question 1 Give two examples each, of modes of transport used on land, water and air. |
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Answer» Question 1 Give two examples each, of modes of transport used on land, water and air. |
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| 271. |
44. In 4R principle ,what is recover |
| Answer» 44. In 4R principle ,what is recover | |
| 272. |
Which of the following activities will result in the loss of magnetic properties of a magnet? |
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Answer» Which of the following activities will result in the loss of magnetic properties of a magnet? |
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| 273. |
While constantly staring at the stars, you thought to take a snapshot of the sky. Suddenly you found that some stars are joined in a random manner. One of the images is shown like this: What is the point A shown here, is called? |
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Answer» While constantly staring at the stars, you thought to take a snapshot of the sky. Suddenly you found that some stars are joined in a random manner. One of the images is shown like this:
What is the point A shown here, is called? |
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| 274. |
84.What will be the magnetic field at the centre of an n sided polygon, if centre to vertex distance is a and the current is I? Also find the limting value of magnetic field as new approaches a large value. |
| Answer» 84.What will be the magnetic field at the centre of an n sided polygon, if centre to vertex distance is a and the current is I? Also find the limting value of magnetic field as new approaches a large value. | |
| 275. |
Which of the following graphs represent uniform motion? |
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Answer» Which of the following graphs represent uniform motion? |
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| 276. |
What is the difference between heat and electrical energy |
| Answer» What is the difference between heat and electrical energy | |
| 277. |
Choose the most appropriate pair. |
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Answer» Choose the most appropriate pair. |
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| 278. |
The man is pushing against the rock. But the rock does not move. Why does the rock not move? |
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Answer» The man is pushing against the rock. But the rock does not move. Why does the rock not move?
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| 279. |
While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied suddenly. Explain. |
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Answer» While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied suddenly. Explain. |
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| 280. |
A bolt head has to be made at the end of a rod of diameter d = 12 mm by localized forging (upsetting) operation. The length of the unsupported portion of the rod is 40 mm. To avoid buckling of the rod, a closed forging operation has to be performed with a maximum die diameter of mm. |
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Answer» A bolt head has to be made at the end of a rod of diameter d = 12 mm by localized forging (upsetting) operation. The length of the unsupported portion of the rod is 40 mm. To avoid buckling of the rod, a closed forging operation has to be performed with a maximum die diameter of |
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| 281. |
If a fan is in circular motion: |
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Answer» If a fan is in circular motion: |
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| 282. |
Comparision between all the three states of matter |
| Answer» Comparision between all the three states of matter | |
| 283. |
In which case the formula for magnification of compound microscope (L/fo )× (D/fe) is valid? |
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Answer» In which case the formula for magnification of compound microscope (L/fo )× (D/fe) is valid? |
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| 284. |
What is the work (in J) put into a simple machine for an output work of 25 J, if the machine is only 55% efficient?45.45 |
Answer» What is the work (in J) put into a simple machine for an output work of 25 J, if the machine is only 55% efficient?
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| 285. |
What is difference between reflection and refraction? |
| Answer» What is difference between reflection and refraction? | |
| 286. |
Describe what relax smile , lasik laser and PRK laser surgery do in myopic and hypermetropic eyes ? |
| Answer» Describe what relax smile , lasik laser and PRK laser surgery do in myopic and hypermetropic eyes ? | |
| 287. |
The south pole of a magnet is brought near an end A of another magnet. The two repel each other. Which pole is end A? |
| Answer» The south pole of a magnet is brought near an end A of another magnet. The two repel each other. Which pole is end A? | |
| 288. |
Which of the following is the most suitable instrument for measuring length of a curved line? |
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Answer» Which of the following is the most suitable instrument for measuring length of a curved line? |
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| 289. |
In an experiment of simple pendulum; time period measured was 50s for 25 vibrations. When the length of the simple pendulum was taken 100 cm. If the least count of Stop watch is 0.1 s and that of metre scale is 0.1cm, Calculate the maximum possible percentage error in the measurement of value of g. |
| Answer» In an experiment of simple pendulum; time period measured was 50s for 25 vibrations. When the length of the simple pendulum was taken 100 cm. If the least count of Stop watch is 0.1 s and that of metre scale is 0.1cm, Calculate the maximum possible percentage error in the measurement of value of g. | |
| 290. |
Identify the types of motion.(a) Movement of the earth around the sun : .......... .(b) Movement of a ceiling fan : ..........(c) A meteor falling from the sky : .......... .(d) A rocket launched from the ground : ..........(e) A fish swimming in water : ..........(f) The plucked string of a sitar : ....... |
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Answer» Identify the types of motion. (a) Movement of the earth around the sun : .......... . (b) Movement of a ceiling fan : .......... (c) A meteor falling from the sky : .......... . (d) A rocket launched from the ground : .......... (e) A fish swimming in water : .......... (f) The plucked string of a sitar : ....... |
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| 291. |
Explain: Unit, capacity. |
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Answer» Explain: Unit, capacity. |
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| 292. |
If two mirrors are inclined at some angle theta.an object is placed between the mirrors and there are 5images formed |
| Answer» If two mirrors are inclined at some angle theta.an object is placed between the mirrors and there are 5images formed | |
| 293. |
Shadow is 3d ?explain in detail. |
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Answer» Shadow is 3d ?explain in detail. |
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| 294. |
40. A geostationary satellite is orbiting the earth at a height 6R above the surface of earth where Ris radius of earth.what will be tha time period of another satellite at a 2.5 from the surface of earth? |
| Answer» 40. A geostationary satellite is orbiting the earth at a height 6R above the surface of earth where Ris radius of earth.what will be tha time period of another satellite at a 2.5 from the surface of earth? | |
| 295. |
When you look into the wall, you cannot see your reflection. Explain why ? |
| Answer» When you look into the wall, you cannot see your reflection. Explain why ? | |
| 296. |
If a magnet is rolled in a packet of steel pins, the pins will get most attracted to(a) the north pole.(b) the south pole.(c) the centre of the magnet.(d) equally to both poles. |
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Answer» If a magnet is rolled in a packet of steel pins, the pins will get most attracted to (a) the north pole. (b) the south pole. (c) the centre of the magnet. (d) equally to both poles. |
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| 297. |
State the zeroth law of thermodynamics. |
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Answer» State the zeroth law of thermodynamics. |
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| 298. |
with the help of an activity,explain the method of inducing electric current in a coil with a moving magnet |
| Answer» with the help of an activity,explain the method of inducing electric current in a coil with a moving magnet | |
| 299. |
A boy completes a marathon of 40 km in 4 hours. What was the speed of the boy? |
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Answer» A boy completes a marathon of 40 km in 4 hours. What was the speed of the boy? |
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| 300. |
a wire of resis†an ce 20 ohm is bent to form a square the equivalent resis†an ce between digonally opposite points i |
| Answer» a wire of resis†an ce 20 ohm is bent to form a square the equivalent resis†an ce between digonally opposite points i | |
