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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.
| 1001. |
Why does density of a substance decrease with increase in temperature ? |
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Answer» Why does density of a substance decrease with increase in temperature ? |
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| 1002. |
A man is running towards a plain mirror with speed 20m/s. Then thebspeed of his image with respect to himself will be? |
| Answer» A man is running towards a plain mirror with speed 20m/s. Then thebspeed of his image with respect to himself will be? | |
| 1003. |
23. Derive the equation for energy lost in a capacitor |
| Answer» 23. Derive the equation for energy lost in a capacitor | |
| 1004. |
Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram. |
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Answer» Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram. |
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| 1005. |
If a simple pendulum of length l and mass m has maximum angular displacement , then find its maximum kinetic energy. |
| Answer» If a simple pendulum of length l and mass m has maximum angular displacement , then find its maximum kinetic energy. | |
| 1006. |
Question 2 Give two examples each of conductors and insulators of heat. |
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Answer» Question 2 |
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| 1007. |
Give an example each of a change that involves:(a) A change in colour(b) Evolution of a gas(c) Production of sound |
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Answer» Give an example each of a change that involves: (a) A change in colour (b) Evolution of a gas (c) Production of sound |
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| 1008. |
What will you observe in a compass needle shown in the figure when the switch is moved to ON position? |
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Answer» What will you observe in a compass needle shown in the figure when the switch is moved to ON position?
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| 1009. |
If a cubical shaped room has a volume of ‘a’ m3, then find the total area (in m2) of all the walls. |
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Answer» If a cubical shaped room has a volume of ‘a’ m3, then find the total area (in m2) of all the walls. |
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| 1010. |
What is the energy conversion in a microphone? |
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Answer» What is the energy conversion in a microphone? |
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| 1011. |
The potential energy U of a particle varies with distance X from a fixed origin as U=AX/x+B where A and B are constants. The dimensions of AandB are respectively? |
| Answer» The potential energy U of a particle varies with distance X from a fixed origin as U=AX/x+B where A and B are constants. The dimensions of AandB are respectively? | |
| 1012. |
The angle subtended by the moon, at the objective lens of an astronomical telescope, is 0.5 rad. The focal length of the objective lens and the eyepiece of the telescope are 30 cm and 10 cm respectively. Find the angle subtended by the final image, at the eyepiece, in case of the least strain on the eye. |
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Answer» The angle subtended by the moon, at the objective lens of an astronomical telescope, is 0.5 rad. The focal length of the objective lens and the eyepiece of the telescope are 30 cm and 10 cm respectively. Find the angle subtended by the final image, at the eyepiece, in case of the least strain on the eye. |
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| 1013. |
28.If velocity, time, and force(V T F) are considered as fundamental quantities the dimensional formula for mass will be |
| Answer» 28.If velocity, time, and force(V T F) are considered as fundamental quantities the dimensional formula for mass will be | |
| 1014. |
Which of the following statements is correct about distance-time graphs? |
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Answer» Which of the following statements is correct about distance-time graphs? |
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| 1015. |
Question 29 (a)Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In another circuit, another set of three bulbs of the same wattage are connected in parallel to the same source.(a) Will the bulb in the two circuits glow with the same brightness? Justify your answer. |
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Answer» Question 29 (a) Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In another circuit, another set of three bulbs of the same wattage are connected in parallel to the same source. (a) Will the bulb in the two circuits glow with the same brightness? Justify your answer. |
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| 1016. |
In plasma state the molecules, are tightly or loosely packed? |
| Answer» In plasma state the molecules, are tightly or loosely packed? | |
| 1017. |
If we rub iron rod with our hair and taking iron rod near to the pieces of paper, will it attaract paper or not ? |
| Answer» If we rub iron rod with our hair and taking iron rod near to the pieces of paper, will it attaract paper or not ? | |
| 1018. |
When we splash in water then why do bubbles form? |
| Answer» When we splash in water then why do bubbles form? | |
| 1019. |
If all the rays are diverging from convex mirror ,then how do we get the image? |
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Answer» If all the rays are diverging from convex mirror ,then how do we get the image? |
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| 1020. |
22. Calculate Kp for the equilibrium NH4HS (s)~>NH3 (g)+H2S (g) if the total pressure inside the reaction vessel is 1.12 atm at 105^° C |
| Answer» 22. Calculate Kp for the equilibrium NH4HS (s)~>NH3 (g)+H2S (g) if the total pressure inside the reaction vessel is 1.12 atm at 105^° C | |
| 1021. |
15.a sound is heard 5 seconds later than lightning is seen in the sky. find the distance of the location of The Lightning given the speed of the sound 346 meter per second |
| Answer» 15.a sound is heard 5 seconds later than lightning is seen in the sky. find the distance of the location of The Lightning given the speed of the sound 346 meter per second | |
| 1022. |
Arrange in increasing order - Speed of sound in steel, water and air. |
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Answer» Arrange in increasing order - Speed of sound in steel, water and air. |
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| 1023. |
Why stainless steel is provided with copper bottoms? [1 MARK] |
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Answer» Why stainless steel is provided with copper bottoms? [1 MARK] |
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| 1024. |
What changes happen to the water bodies during different seasons? |
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Answer» What changes happen to the water bodies during different seasons? |
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| 1025. |
If displacement is root x=t+7,then how acceleration is constant?( is it constant by having the number 2 or acceleration is constant throughout the motion) |
| Answer» If displacement is root x=t+7,then how acceleration is constant?( is it constant by having the number 2 or acceleration is constant throughout the motion) | |
| 1026. |
Why the shadows are not completely dark as they should be |
| Answer» Why the shadows are not completely dark as they should be | |
| 1027. |
In which of the following examples of motion, can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the ground. (d) a tumbling beaker that has slipped off the edge of a table |
| Answer» In which of the following examples of motion, can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two stations. (b) a monkey sitting on top of a man cycling smoothly on a circular track. (c) a spinning cricket ball that turns sharply on hitting the ground. (d) a tumbling beaker that has slipped off the edge of a table | |
| 1028. |
If a footballer passes the ball to his teammate (the path followed by the ball is shown in the picture), the type of motion experienced by the ball is : |
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Answer» If a footballer passes the ball to his teammate (the path followed by the ball is shown in the picture), the type of motion experienced by the ball is :
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| 1029. |
A car covers a distance of 160 km in 2 h, and another 80 km in the next 1 h. Calculate the car's average speed in m s−1.22.22 |
Answer» A car covers a distance of 160 km in 2 h, and another 80 km in the next 1 h. Calculate the car's average speed in m s−1.
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| 1030. |
Why does H_2O is a liquid whereas H_2S is a gas |
| Answer» Why does H_2O is a liquid whereas H_2S is a gas | |
| 1031. |
A man paved his square courtyard with square tiles. After this, he wanted to increase the courtyard and bought 324 more tiles of the same size. These were added onto the existing courtyard to make a bigger one in square shape. Find the total number of tiles used to make the bigger courtyard. |
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Answer» A man paved his square courtyard with square tiles. After this, he wanted to increase the courtyard and bought 324 more tiles of the same size. These were added onto the existing courtyard to make a bigger one in square shape. Find the total number of tiles used to make the bigger courtyard. |
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| 1032. |
Give two examples each of conductors and insulators of heat. |
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Answer»
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| 1033. |
The decomposition of N2O5 in chloroform was followed by measuring the volume of O2 gas evolved: 2N2O5(CCl4) -------> 2N2O4(CCl4)+O2(g).The maximum volume of O2 gas obtained was 100cm^3. In 500 minutes ,90 cm^3 of O2 were evolved . The first order rate constant (in min^-1 ) for the disappearance of N2O5 is |
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Answer» The decomposition of N2O5 in chloroform was followed by measuring the volume of O2 gas evolved: 2N2O5(CCl4) -------> 2N2O4(CCl4)+O2(g). The maximum volume of O2 gas obtained was 100cm^3. In 500 minutes ,90 cm^3 of O2 were evolved . The first order rate constant (in min^-1 ) for the disappearance of N2O5 is |
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| 1034. |
How many watts of power are spent when force of 2N is able to move a book of 1m in the time of 2 Seconds? |
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Answer» How many watts of power are spent when force of 2N is able to move a book of 1m in the time of 2 Seconds? |
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| 1035. |
4.The electric current in a circuit is given by I=3 sinwt + 4 coswt. The rms current is (1)5/2 (2)5 (3)4/2 (4)3/2 |
| Answer» 4.The electric current in a circuit is given by I=3 sinwt + 4 coswt. The rms current is (1)5/2 (2)5 (3)4/2 (4)3/2 | |
| 1036. |
Question 4ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus. |
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Answer» Question 4 ABCD is a rhombus in which altitude from D to side AB bisects AB. Find the angles of the rhombus. |
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| 1037. |
Arrange the following substances in order of their increasing density a)iron b)cork c)brass d)water e)mercury |
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Answer» Arrange the following substances in order of their increasing density a)iron b)cork c)brass d)water e)mercury |
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| 1038. |
If a plane mirror is moved by a velocity 10 metre per second towards the object, then the velocity of the image and its direction is: |
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Answer» If a plane mirror is moved by a velocity 10 metre per second towards the object, then the velocity of the image and its direction is: |
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| 1039. |
A magnet always has __________ poles. |
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Answer» A magnet always has __________ poles. |
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| 1040. |
Which alloy is used to make powerful magnets? |
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Answer» Which alloy is used to make powerful magnets? |
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| 1041. |
Sound is produced when a body undergoes to-and-fro movement. However, no sound is produced when a person waves his/her hand. Why? |
| Answer» Sound is produced when a body undergoes to-and-fro movement. However, no sound is produced when a person waves his/her hand. Why? | |
| 1042. |
How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? |
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Answer» How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 40 cm? |
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| 1043. |
(4) Remains sameIf mass of earth decreases by 25% and its radius increases by 50%, then acceleration due to gravity at itssurface decreases by nearly(1) 89%(2) 67%(3) 33%(4) 11%Twe |
| Answer» (4) Remains sameIf mass of earth decreases by 25% and its radius increases by 50%, then acceleration due to gravity at itssurface decreases by nearly(1) 89%(2) 67%(3) 33%(4) 11%Twe | |
| 1044. |
Fill in the blanks with the correct punctuation marks. Girija ____ my friend from college ____ ordered a few things from the shop ____ lanterns, curtains and a mirror. |
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Answer» Fill in the blanks with the correct punctuation marks. Girija ____ my friend from college ____ ordered a few things from the shop ____ lanterns, curtains and a mirror. |
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| 1045. |
If [(y/z)to the power a [(z/x)to the power b][(x/y) to the powerc]= 1, then prove that [(y/z)to the power 1/b-c] =[(z/x)to the power 1/c-a] = [(x/y)to the power 1/a-b] |
| Answer» If [(y/z)to the power a [(z/x)to the power b][(x/y) to the powerc]= 1, then prove that [(y/z)to the power 1/b-c] =[(z/x)to the power 1/c-a] = [(x/y)to the power 1/a-b] | |
| 1046. |
Four arrangements to measure the temperature of the water in a beaker with a laboratory thermometer are shown in the figure. Which of the following shows the correct arrangement for accurate measurement of temperature? |
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Answer» Four arrangements to measure the temperature of the water in a beaker with a laboratory thermometer are shown in the figure. Which of the following shows the correct arrangement for accurate measurement of temperature? |
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| 1047. |
An object ′O′ is placed between two parallel mirrors M1 and M2 as shown in the figure. Find distance between the 2nd image formed by M1 and 4th image formed by M2. The first reflection occurs at M1. |
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Answer» An object ′O′ is placed between two parallel mirrors M1 and M2 as shown in the figure. Find distance between the 2nd image formed by M1 and 4th image formed by M2. The first reflection occurs at M1. |
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| 1048. |
A particle when thrown, moves such that it passes from same height at 2 and 10 seconds, then this height h is |
| Answer» A particle when thrown, moves such that it passes from same height at 2 and 10 seconds, then this height h is | |
| 1049. |
Which of the following is also called a Morning or an Evening Star? |
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Answer» Which of the following is also called a Morning or an Evening Star? |
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| 1050. |
Write down the letter C and I as seen in a plane mirror. |
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Answer» Write down the letter C and I as seen in a plane mirror. |
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