Saved Bookmarks
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.
| 9351. |
Acceleration (a) of a body of radius R rolling down an inclined plane of inclination θ is given by |
|
Answer» Acceleration (a) of a body of radius R rolling down an inclined plane of inclination θ is given by |
|
| 9352. |
If the density of the object placed in a liquid is equal to the density of the liquid, the object will: |
|
Answer» If the density of the object placed in a liquid is equal to the density of the liquid, the object will: |
|
| 9353. |
Given are the velocity-time graphs of four particles. In which of the cases the displacement of the particle is zero at time t? |
|
Answer» Given are the velocity-time graphs of four particles. In which of the cases the displacement of the particle is zero at time t? |
|
| 9354. |
Use the following information to answer the next question. In the Beijing Olympic, sprinter Usain Bolt created a new world record by winning the 100 meters race in just 9.69 seconds. If his acceleration is considered to have been uniform throughout the race, then his velocity at the finishing line was |
|
Answer» Use the following information to answer the next question. In the Beijing Olympic, sprinter Usain Bolt created a new world record by winning the 100 meters race in just 9.69 seconds. If his acceleration is considered to have been uniform throughout the race, then his velocity at the finishing line was |
|
| 9355. |
During ancient times, people believed that the Earth was the center of the universe and all celestial bodies including the Sun revolved around the Earth. If this hypothesis were to be true, then: |
|
Answer» During ancient times, people believed that the Earth was the center of the universe and all celestial bodies including the Sun revolved around the Earth. If this hypothesis were to be true, then: |
|
| 9356. |
What is nuclear energy Name the process used for producing electricity using the nuclear energy? |
|
Answer» What is nuclear energy Name the process used for producing electricity using the nuclear energy? |
|
| 9357. |
If a person walked at 2 m/s for 12 s he/she would travel a distance of |
|
Answer» If a person walked at 2 m/s for 12 s he/she would travel a distance of |
|
| 9358. |
Which of the following diagrams correctly represents the direction of field lines around a bar magnet? |
|
Answer» Which of the following diagrams correctly represents the direction of field lines around a bar magnet?
|
|
| 9359. |
If the mass of a body is 10 kg and acceleration due to gravity at a place is 9.8 m s−2, then weight of body is: |
|
Answer» If the mass of a body is 10 kg and acceleration due to gravity at a place is 9.8 m s−2, then weight of body is: |
|
| 9360. |
A car decreases its velocity from 80 kmhr−1 to 60 kmhr−1 in 5 seconds. The acceleration of the car is |
|
Answer» A car decreases its velocity from 80 kmhr−1 to 60 kmhr−1 in 5 seconds. The acceleration of the car is |
|
| 9361. |
What is the mass of a body whose weight is 59 N? Take g = 9.8 m/s2 |
|
Answer» What is the mass of a body whose weight is 59 N? Take g = 9.8 m/s2 |
|
| 9362. |
A body of mass 9.8 kg is placed on the surface of the earth. The weight of it is : |
|
Answer» A body of mass 9.8 kg is placed on the surface of the earth. The weight of it is : |
|
| 9363. |
If two masses m1 and m2 collide with each other. Before the collision, the velocities are u1 and u2 respectively. After the collision the velocities are V1 and V2. What is the final momentum after collision? |
|
Answer» If two masses m1 and m2 collide with each other. Before the collision, the velocities are u1 and u2 respectively. After the collision the velocities are V1 and V2. What is the final momentum after collision? |
|
| 9364. |
A bag contains a book weighing 2 kg, a box weighing 375 g and a notebook weighing 0.1 kg. What is the total weight of the bag? |
|
Answer» A bag contains a book weighing 2 kg, a box weighing 375 g and a notebook weighing 0.1 kg. What is the total weight of the bag? |
|
| 9365. |
A child is moving on a skateboard at the speed of 2 m/s. After a force acts on him, his speed becomes 3 m/s. Find the work done by the external force on the child, given the weight of the child is 20 kg. |
|
Answer» A child is moving on a skateboard at the speed of 2 m/s. After a force acts on him, his speed becomes 3 m/s. Find the work done by the external force on the child, given the weight of the child is 20 kg. |
|
| 9366. |
(a) The diameter of neck and bottom of a bottle are 2 cm and 10 cm respectively. The bottle is completely filled with oil. If the cork in the neck is pressed in with a force of 1.2 kgf, what force is exerted on the bottom of the bottle ? (b) Name the law/principle you have used to find the force in part (a) |
|
Answer» (a) The diameter of neck and bottom of a bottle are 2 cm and 10 cm respectively. The bottle is completely filled with oil. If the cork in the neck is pressed in with a force of 1.2 kgf, what force is exerted on the bottom of the bottle ? (b) Name the law/principle you have used to find the force in part (a) |
|
| 9367. |
A body travelling with uniform acceleration moves 64m in first 4 seconds and 200m in next 7 seconds. Find the acceleration of the body. |
|
Answer» A body travelling with uniform acceleration moves 64m in first 4 seconds and 200m in next 7 seconds. Find the acceleration of the body. |
|
| 9368. |
A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: (c) the force of wagon 1 on wagon 2 |
|
Answer» A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate: |
|
| 9369. |
Why does a cricketer witdraw his hands along with the ball?? |
|
Answer» Why does a cricketer witdraw his hands along with the ball?? |
|
| 9370. |
What is sonorous? |
|
Answer» What is sonorous? |
|
| 9371. |
When a planet moves around the sun,it's a. areal velocity is constant b. linear velocity is constant c. angular velocity is constant d. all the velocities are constant |
|
Answer» When a planet moves around the sun,it's a. areal velocity is constant b. linear velocity is constant c. angular velocity is constant d. all the velocities are constant |
|
| 9372. |
Question 12 According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move. |
|
Answer» Question 12 According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move. |
|
| 9373. |
The diagram given below shows a ski jump. A skier weighing 60 kgf stands at A at the top of the ski jump. He moves from A and takes off for his jump at B. (a) Calculate the change in the gravitational potential energy of the skier between A and B. (b) If 75% of the energy in part (a) becomes kinetic energy at B, calculate the speed at which the skier arrives at B.(Take g=10 ms−2. |
|
Answer» The diagram given below shows a ski jump. A skier weighing 60 kgf stands at A at the top of the ski jump. He moves from A and takes off for his jump at B.
(a) Calculate the change in the gravitational potential energy of the skier between A and B. (b) If 75% of the energy in part (a) becomes kinetic energy at B, calculate the speed at which the skier arrives at B.(Take g=10 ms−2. |
|
| 9374. |
A nucleus of mass M+△m is at rest and decays into two daughter nuclei of equal mass M2 each. The speed of light is c. The speed of daughter nuclei is |
|
Answer» A nucleus of mass M+△m is at rest and decays into two daughter nuclei of equal mass M2 each. The speed of light is c. The speed of daughter nuclei is |
|
| 9375. |
An egg just sinks when dropped in a container filled with water. If common salt is added to the water then |
|
Answer» An egg just sinks when dropped in a container filled with water. If common salt is added to the water then
|
|
| 9376. |
From a rifle of mass 4kg, a bullet of mass 50g is fired with an initial velocity of 35 ms−1 with respect to the ground. Calculate the initial recoil velocity of the rifle. |
|
Answer» From a rifle of mass 4kg, a bullet of mass 50g is fired with an initial velocity of 35 ms−1 with respect to the ground. Calculate the initial recoil velocity of the rifle. |
|
| 9377. |
Which requires more work (in Joules) a block of 20 kg lifted to height of 20m or a block of 40 kg lifted to height of 10m? |
|
Answer» Which requires more work (in Joules) a block of 20 kg lifted to height of 20m or a block of 40 kg lifted to height of 10m? |
|
| 9378. |
What is Archimedes principle? |
| Answer» What is Archimedes principle? | |
| 9379. |
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same : (a) acceleration (b) momentum (c) potential energy (d) kinetic energy |
|
Answer» An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same : (a) acceleration (b) momentum (c) potential energy (d) kinetic energy |
|
| 9380. |
Light and sound travel like a wave. Across a wall, we can hear two persons talking but can not see them. Why? |
| Answer» Light and sound travel like a wave. Across a wall, we can hear two persons talking but can not see them. Why? | |
| 9381. |
What is the value of acceleration due to the gravity of the Earth? |
|
Answer» What is the value of acceleration due to the gravity of the Earth? |
|
| 9382. |
What is the meaning of net external force? |
|
Answer» What is the meaning of net external force? |
|
| 9383. |
(a) State and explain the law of conservation of energy with an example. (b) Explain how the total energy of a swinging pendulum at any instant of time is conserved. Illustrate your answer with the help of a labelled diagram. |
|
Answer» (a) State and explain the law of conservation of energy with an example. (b) Explain how the total energy of a swinging pendulum at any instant of time is conserved. Illustrate your answer with the help of a labelled diagram. |
|
| 9384. |
What is 10 percent Law? [3 MARKS] |
|
Answer» What is 10 percent Law? [3 MARKS] |
|
| 9385. |
A man fires a gun and hears its echo after 5 s.The man moves 310 m towards the hill and fires his gun again.This time if he hears the echo after 3 s, calculate the speed of sound. |
|
Answer» A man fires a gun and hears its echo after 5 s.The man moves 310 m towards the hill and fires his gun again.This time if he hears the echo after 3 s, calculate the speed of sound. |
|
| 9386. |
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed is: |
|
Answer» An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed is: |
|
| 9387. |
Statement:1 - Isotopes have the same chemical properties. Statement:2 - Isobars have different chemical properties. |
|
Answer» Statement:1 - Isotopes have the same chemical properties. |
|
| 9388. |
What is a Newton |
| Answer» What is a Newton | |
| 9389. |
Two physical quantities Defined by first law of motion |
|
Answer» Two physical quantities Defined by first law of motion |
|
| 9390. |
(a) Define mass of a body. What is the SI unit of mass ? (b) Define weight of a body. What is the SI unit of weight ? (c) What is the relation between mass and weight of a body ? |
|
Answer» (a) Define mass of a body. What is the SI unit of mass ? |
|
| 9391. |
What is weight of a block of mass 5 kg at the centre of the earth? (Take g=10 m/s2) |
|
Answer» What is weight of a block of mass 5 kg at the centre of the earth? (Take g=10 m/s2) |
|
| 9392. |
explain momentum in short way |
|
Answer» explain momentum in short way |
|
| 9393. |
Complete the following sentence : The sound is produced by a ___ body. |
|
Answer» Complete the following sentence : The sound is produced by a |
|
| 9394. |
Why the inertia of a body increases when the speed of the body is near to the speed of light. |
|
Answer» Why the inertia of a body increases when the speed of the body is near to the speed of light. |
|
| 9395. |
Is it possible that some force is acting on a body but still the work done it's zero |
| Answer» Is it possible that some force is acting on a body but still the work done it's zero | |
| 9396. |
Can we apply Newton's first law on moon according to inertia |
| Answer» Can we apply Newton's first law on moon according to inertia | |
| 9397. |
Why is speed considered to be an incomplete physical quantity ? Name a quantity alike to speed which describes the motion of a particle more accurately . |
|
Answer» Why is speed considered to be an incomplete physical quantity ? Name a quantity alike to speed which describes the motion of a particle more accurately . |
|
| 9398. |
A solid weighs 100 N in the air and 90 N when completely immersed in water. Calculate the volume of the solid. Take acceleration due to gravity g = 10 m/s2 |
|
Answer» A solid weighs 100 N in the air and 90 N when completely immersed in water. Calculate the volume of the solid. Take acceleration due to gravity g = 10 m/s2 |
|
| 9399. |
The ratio of Boyle's temperature and critical temperature for a gas is: |
|
Answer» The ratio of Boyle's temperature and critical temperature for a gas is: |
|
| 9400. |
Electric fuse works on the principle of _________ effect of electric current. |
|
Answer» Electric fuse works on the principle of _________ effect of electric current. |
|
