InterviewSolution
Saved Bookmarks
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.
| 151. |
State the uses of electromagnets. |
|
Answer» State the uses of electromagnets. |
|
| 152. |
Question 11Explain why the planets do not twinkle? |
|
Answer» Question 11 |
|
| 153. |
Question 18 (a)Explain:(a) Why is the tungsten used almost exclusively for filament of electric lamps? |
|
Answer» Question 18 (a) Explain: (a) Why is the tungsten used almost exclusively for filament of electric lamps? |
|
| 154. |
Ramu went for karate class at 16:30. Which clock correctly shows the time Ramu went for karate class? |
|
Answer» Ramu went for karate class at 16:30. Which clock correctly shows the time Ramu went for karate class? |
|
| 155. |
Discuss the difference between democratic and monarchical form of government. |
| Answer» Discuss the difference between democratic and monarchical form of government. | |
| 156. |
A star in the Ursa Major that indicates the north direction is called |
|
Answer» A star in the Ursa Major that indicates the north direction is called |
|
| 157. |
Which of the following are forms of mechanical energy? |
|
Answer» Which of the following are forms of mechanical energy? |
|
| 158. |
The average speed of an object over a given time duration is 6m/s if it travels first half of the duration with a constant speed 4m/s its speed during the next half duration is |
| Answer» The average speed of an object over a given time duration is 6m/s if it travels first half of the duration with a constant speed 4m/s its speed during the next half duration is | |
| 159. |
Which of the following objects would you choose to make the screen of a pinhole camera? |
|
Answer» Which of the following objects would you choose to make the screen of a pinhole camera? |
|
| 160. |
7.A uniform conducting rectangular loop of sides l, b and mass m carrying current i is hanging horizontally with the help of two vertical strings. There exists a uniform horizontal magnetic field B which is parallel to the longer side of loop. Find the least value of tension in the strings? A) mg-Bib/2 B) mg-2iBb /2 C) mg+2iBb/2 D) mg+iBb/2 |
| Answer» 7.A uniform conducting rectangular loop of sides l, b and mass m carrying current i is hanging horizontally with the help of two vertical strings. There exists a uniform horizontal magnetic field B which is parallel to the longer side of loop. Find the least value of tension in the strings? A) mg-Bib/2 B) mg-2iBb /2 C) mg+2iBb/2 D) mg+iBb/2 | |
| 161. |
Question 20 Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image? |
|
Answer» Question 20 Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image? |
|
| 162. |
What is a parallax error? |
|
Answer» What is a parallax error? |
|
| 163. |
A businessman went to see a Formula 1 car race. It was raining and several cars skidded on the road. There were a couple of major accidents and some drivers sustained serious injuries.He decided to do something about it. He designed a racing car tyre with increased friction that would not slip on wet roads. He advertised it as: "Now a racing car tyre that keeps you safe."However nobody bought the tyres. Where do you think the businessman went wrong? |
|
Answer» A businessman went to see a Formula 1 car race. It was raining and several cars skidded on the road. There were a couple of major accidents and some drivers sustained serious injuries. He decided to do something about it. He designed a racing car tyre with increased friction that would not slip on wet roads. He advertised it as: "Now a racing car tyre that keeps you safe." However nobody bought the tyres. Where do you think the businessman went wrong? |
|
| 164. |
A body is moving in the direction opposite to the direction of force acting on it. The work done ___. |
|
Answer» A body is moving in the direction opposite to the direction of force acting on it. The work done ___. |
|
| 165. |
The efficiency of any machine is given by ___ . |
|
Answer» The efficiency of any machine is given by |
|
| 166. |
A block of mass m is placed on a surface with vertical cross section given by y=x^3/6 . If coefficient of friction is 0.5 Find maximum height above ground at which the block can be placed without slipping |
| Answer» A block of mass m is placed on a surface with vertical cross section given by y=x^3/6 . If coefficient of friction is 0.5 Find maximum height above ground at which the block can be placed without slipping | |
| 167. |
What is the reason behind paramagnetic behavior of KO_2? |
| Answer» What is the reason behind paramagnetic behavior of KO_2? | |
| 168. |
Why do we use standard unit of length for measurements? |
|
Answer» Why do we use standard unit of length for measurements? |
|
| 169. |
The magnetic strength of a magnet(a) is uniform throughout the body of the magnet.(b) is concentrated at one point called the pole of the magnet.(c) is concentrated in two regions called the poles of the magnet.(d) is concentrated in the centre of the magnet. |
|
Answer» The magnetic strength of a magnet (a) is uniform throughout the body of the magnet. (b) is concentrated at one point called the pole of the magnet. (c) is concentrated in two regions called the poles of the magnet. (d) is concentrated in the centre of the magnet. |
|
| 170. |
A plane mirror of length 90 cm is mounted on the wall in a barber shop. What is the maximum height a man can have to see his own image completely in the mirror ? |
|
Answer» A plane mirror of length 90 cm is mounted on the wall in a barber shop. What is the maximum height a man can have to see his own image completely in the mirror ? |
|
| 171. |
When an object obstructs the path of light, the dark area formed on the screen is called________. |
|
Answer» When an object obstructs the path of light, the dark area formed on the screen is called________. |
|
| 172. |
Motion of which of the following is not periodic?(a) beating of a drum(b) revolution of moon around the earth(c) rotation of the earth around its axis(d) movement of pendulum |
|
Answer» Motion of which of the following is not periodic? (a) beating of a drum (b) revolution of moon around the earth (c) rotation of the earth around its axis (d) movement of pendulum |
|
| 173. |
20. What is E2 mechanism ? |
| Answer» 20. What is E2 mechanism ? | |
| 174. |
Explain this point: When an object is thrown in a direction different from the line of constant force then it follows a parabolic path. |
| Answer» Explain this point: When an object is thrown in a direction different from the line of constant force then it follows a parabolic path. | |
| 175. |
Five balls marked a to e are suspended using separate threads. Pairs (b. c) and (de)s electrostatic repulsion while pairs (a, b), (c, e) and (a, e) show electrostatic attraction. W is nature of charge of ball a? |
| Answer» Five balls marked a to e are suspended using separate threads. Pairs (b. c) and (de)s electrostatic repulsion while pairs (a, b), (c, e) and (a, e) show electrostatic attraction. W is nature of charge of ball a? | |
| 176. |
Select the examples of a lever in a human body. |
|
Answer» Select the examples of a lever in a human body. |
|
| 177. |
The work done on a body is 10 J. If the displacement is 10 m in the direction of the force, then the force applied is . |
|
Answer» The work done on a body is 10 J. If the displacement is 10 m in the direction of the force, then the force applied is |
|
| 178. |
The best way to observe a solar eclipse is |
|
Answer» The best way to observe a solar eclipse is |
|
| 179. |
Find the time period and amplitude of a particle when position of X axis is given by X = (12sin(4πt)+16cos(4πt)) |
|
Answer» Find the time period and amplitude of a particle when position of X axis is given by X = (12sin(4πt)+16cos(4πt)) |
|
| 180. |
The _____ lies in between the ______ and the ______ in the second-class lever. |
|
Answer» The _____ lies in between the ______ and the ______ in the second-class lever. |
|
| 181. |
Wheel with a rotating axle is an example of a ______ . |
|
Answer» Wheel with a rotating axle is an example of a ______ . |
|
| 182. |
How shadows are formed? Do all objects cast shadows? |
|
Answer» How shadows are formed? Do all objects cast shadows? |
|
| 183. |
An athlete completes one round of a circular track of radius R in 40 sec. What will we his displacement at the end of 2min. 20sec? |
| Answer» An athlete completes one round of a circular track of radius R in 40 sec. What will we his displacement at the end of 2min. 20sec? | |
| 184. |
what is diffraction of waves and fresenl's framnhoffer diffraction at single slit?? |
| Answer» what is diffraction of waves and fresenl's framnhoffer diffraction at single slit?? | |
| 185. |
What is rectangular propagation of light |
| Answer» What is rectangular propagation of light | |
| 186. |
Sudha finds out that the sharp image of the widow pane of her science laboratory is formed on a screen kept at a distance of 15 cm from the lens. She now tries to focus the building visible to her outside the window instead of the window pane without disturbing the lens. In which direction will she move the screen to obtain a sharp image of the building? |
|
Answer» Sudha finds out that the sharp image of the widow pane of her science laboratory is formed on a screen kept at a distance of 15 cm from the lens. She now tries to focus the building visible to her outside the window instead of the window pane without disturbing the lens. In which direction will she move the screen to obtain a sharp image of the building? |
|
| 187. |
While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle? |
|
Answer» While measuring the length of a knitting needle, the reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm. What is the length of the needle? |
|
| 188. |
23.Whatis p block elements |
| Answer» 23.Whatis p block elements | |
| 189. |
when identical magnets each of magnetic moment M are arranged to form a closed polygon like a square or triangle with unlikee poles at each corner .then resul†an t magnetic mo ment is? |
| Answer» when identical magnets each of magnetic moment M are arranged to form a closed polygon like a square or triangle with unlikee poles at each corner .then resul†an t magnetic mo ment is? | |
| 190. |
why object gains potential energy when kept at height but has no potential energy energy when kept at ground |
| Answer» why object gains potential energy when kept at height but has no potential energy energy when kept at ground | |
| 191. |
Will the bulb glow in the circuit shown in figure? Explain. |
Answer» Will the bulb glow in the circuit shown in figure? Explain. |
|
| 192. |
Question 2 (a) Mark 'True' or 'False' for following statement: Electric current can flow through metals. |
|
Answer» Question 2 (a) Mark 'True' or 'False' for following statement: Electric current can flow through metals. |
|
| 193. |
Can an image be formed without a screen? |
| Answer» Can an image be formed without a screen? | |
| 194. |
How long does it take for light from the sun to reach Earth? |
|
Answer» How long does it take for light from the sun to reach Earth? |
|
| 195. |
Greeks used to call the magical stones, which had the power of attracting iron objects, by the name ______. |
|
Answer» Greeks used to call the magical stones, which had the power of attracting iron objects, by the name ______. |
|
| 196. |
If m0 and m are rest mass and moving mass of a body then its kinetic energy is |
| Answer» If m0 and m are rest mass and moving mass of a body then its kinetic energy is | |
| 197. |
what is the speed of ligh |
| Answer» what is the speed of ligh | |
| 198. |
A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth,R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is |
| Answer» A geostationary satellite is orbiting the earth at a height of 5R above that surface of the earth,R being the radius of the earth. The time period of another satellite in hours at a height of 2R from the surface of the earth is | |
| 199. |
If each side of a square of side a, is doubled, the new area is: |
|
Answer» If each side of a square of side a, is doubled, the new area is: |
|
| 200. |
What are the types of forces? |
|
Answer» What are the types of forces? |
|