9478 + Interview Questions in Physics Page 176 InterviewSolution

8751.	What the difference between energy produced during a nuclear fussion and fission?
Answer» What the difference between energy produced during a nuclear fussion and fission?

Discussion

8752.	Difference between vapour and gas
Answer» Difference between vapour and gas

Discussion

8753.	If earth is having gravitational force,and satellites are out of earths atmosphere then why satellites are steady there?why moons gravitational force not attracting them towards it.
Answer» If earth is having gravitational force,and satellites are out of earths atmosphere then why satellites are steady there?why moons gravitational force not attracting them towards it.

Discussion

8754.	A train travels at 82.6km/h.How many meters in 15 minutes
Answer» A train travels at 82.6km/h.How many meters in 15 minutes

Discussion

8755.	Why does light changes it speed in every medium
Answer» Why does light changes it speed in every medium

Discussion

8756.	Which is optically denser : water or air ? Give reason.
Answer» Which is optically denser : water or air ? Give reason.

Discussion

8757.	The diagram (Fig. 5.41) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.
Answer» The diagram (Fig. 5.41) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.

8757.

The diagram (Fig. 5.41) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.

Answer»

The diagram (Fig. 5.41) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.

Discussion

8758.	State one way to decrease the moment of a given force about a given axis of rotation
Answer» State one way to decrease the moment of a given force about a given axis of rotation

Discussion

8759.	A tightly closed container contains 500 ml of gas. Now, the gas is carefully transported into a 1000 ml container without any leakage. What is the volume of gas in the new container?
Answer» A tightly closed container contains $500 m l$ of gas. Now, the gas is carefully transported into a $1000 m l$ container without any leakage. What is the volume of gas in the new container?

Discussion

8760.	When the live wire and the fuse wire come in contact with each other in a circuit, it causes a/an _________.
Answer» When the live wire and the fuse wire come in contact with each other in a circuit, it causes a/an _________.

Discussion

8761.	Sound waves can travel in which of the following?
Answer» Sound waves can travel in which of the following?

8761.

Sound waves can travel in which of the following?

Answer»

Sound waves can travel in which of the following?

Discussion

8762.	When a 0.5 kW heater operates for 20 minutes, the electrical energy consumed is equal to ___ kJ.
Answer» When a 0.5 kW heater operates for 20 minutes, the electrical energy consumed is equal to ___ kJ.

Discussion

8763.	Find the volume of a wooden cube whose side is 12 cm long and has a mass of 3.5 kg.
Answer» Find the volume of a wooden cube whose side is 12 cm long and has a mass of 3.5 kg.

Discussion

8764.	The volume of 50 g of a substance is 20cm3. If the density of water is 1 gcm−3, will the substance float or sink?
Answer» The volume of $50 g$ of a substance is $20 c m^{3}$ . If the density of water is $1 g c m^{- 3}$ , will the substance float or sink?

Discussion

8765.	How can we know that a object is chaerged positively or negatively ??
Answer» How can we know that a object is chaerged positively or negatively ??

Discussion

8766.	A rectangular wooden block has length, breadth and height of 50cm,25cm,and 10cm,respectively .This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground ? (a) the maximum pressure is exerted when the length and greadth form the base (b) the maximum pressure is exerted whwn length and height form the base (c) the maximum pressure is exerted when breadth and height form the base (d) the maximum pressure is exerted when length and height form the base
Answer» A rectangular wooden block has length, breadth and height of 50cm,25cm,and 10cm,respectively .This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground ? (a) the maximum pressure is exerted when the length and greadth form the base (b) the maximum pressure is exerted whwn length and height form the base (c) the maximum pressure is exerted when breadth and height form the base (d) the maximum pressure is exerted when length and height form the base

Discussion

8767.	If the plates of a capacitor are oppositely charged, then what is the total charge?
Answer» If the plates of a capacitor are oppositely charged, then what is the total charge?

Discussion

8768.	Harish ran a certain distance faster than Suresh. Which fundamental physical quantity/quantities is/are measured for comparing their speeds?
Answer» Harish ran a certain distance faster than Suresh. Which fundamental physical quantity/quantities is/are measured for comparing their speeds?

Discussion

8769.	A. When at its brightest, it is easily seen with the naked eye in broad daylight. B. When at its farthest from the Earth, Venus is 160 million away. C. With such a wide range between its greatest and least distances it is natural that at sometimes Venus appears much brighter than at others. D. No other body ever comes so near the Earth, with the exception of the Moon and occasional comet or asteroid. E. When Venus is at its nearest to the earth it is only 26 million miles away. F. The path of Venus lies inside the path of the Earth. ___
Answer» A. When at its brightest, it is easily seen with the naked eye in broad daylight. B. When at its farthest from the Earth, Venus is 160 million away. C. With such a wide range between its greatest and least distances it is natural that at sometimes Venus appears much brighter than at others. D. No other body ever comes so near the Earth, with the exception of the Moon and occasional comet or asteroid. E. When Venus is at its nearest to the earth it is only 26 million miles away. F. The path of Venus lies inside the path of the Earth. ___

Discussion

8770.	Write the full form of LED.
Answer» Write the full form of LED.

Discussion

8771.	Which parts wear away first in shoes ? Give a reason for your answer.
Answer» Which parts wear away first in shoes ? Give a reason for your answer.

Discussion

8772.	What is Emergent ray?
Answer» What is Emergent ray?

Discussion

8773.	A machine has a velocity ratio of 4. It is used to raise a load of 400N by 4m using an effort 20kgf. Find the work done on the machine. Take g = 10 m/s2.
Answer» A machine has a velocity ratio of 4. It is used to raise a load of 400N by 4m using an effort 20kgf. Find the work done on the machine. Take g = 10 m/s $^{2}$ .

Discussion

8774.	In which direction does the buoyant force acts?
Answer» In which direction does the buoyant force acts?

Discussion

8775.	How is pressure related to force and area
Answer» How is pressure related to force and area

Discussion

8776.	HOW DOES ATMOSPHERIC PRESSURE HELP US ?
Answer» HOW DOES ATMOSPHERIC PRESSURE HELP US ?

Discussion

8777.	Why does not produce sound when it osscilates?
Answer» Why does not produce sound when it osscilates?

Discussion

8778.	A thin layer of some metal like zinc is deposited on an object to ___________.
Answer» A thin layer of some metal like zinc is deposited on an object to ___________.

Discussion

8779.	Which celestial bodies help scientist in investigating the nature of the material from which the solar system was formed
Answer» Which celestial bodies help scientist in investigating the nature of the material from which the solar system was formed

Discussion

8780.	State true or false also correct the false statements. 1. Hot water discharge into rivers from factories is also a pollutant. 2. Aluminium does not react with water. 3. Only the earth exerts gravitational force on all objects. 4. Plant cells have large vacuoles as compared to animal cells.
Answer» State true or false also correct the false statements. 1. Hot water discharge into rivers from factories is also a pollutant. 2. Aluminium does not react with water. 3. Only the earth exerts gravitational force on all objects. 4. Plant cells have large vacuoles as compared to animal cells.

Discussion

8781.	Sun in orange colour but rainbow is caused by dispersion so the white light produced from sun should be in white and the sun also should be in white colour
Answer» Sun in orange colour but rainbow is caused by dispersion so the white light produced from sun should be in white and the sun also should be in white colour

Discussion

8782.	Why is nuclear fission highly exothermic(energy)?
Answer» Why is nuclear fission highly exothermic(energy)?

Discussion

8783.	Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by : (a) a concave mirror, and (b) a convex mirror.
Answer» Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by : (a) a concave mirror, and (b) a convex mirror.

8783.

Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by : (a) a concave mirror, and (b) a convex mirror.

Answer»

Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by :

(a) a concave mirror, and (b) a convex mirror.

Discussion

8784.	A car accelerates from rest to 100 m/s in 10 seconds. If mass of the car is 50 kg then power developed by the engine is: (Select all that apply)
Answer» A car accelerates from rest to 100 m/s in 10 seconds. If mass of the car is 50 kg then power developed by the engine is: (Select all that apply)

Discussion

8785.	An image which can be obtained on a screen is known as a _____.
Answer» An image which can be obtained on a screen is known as a _____.

Discussion

8786.	What type of mirror is used in the headlights of a car?
Answer» What type of mirror is used in the headlights of a car?

Discussion

8787.	The word "Fusion" is meant for___.
Answer» The word "Fusion" is meant for___.

Discussion

8788.	The time period of a simple pendulum is 0.4 sec. What is its frequency of oscillation?
Answer» The time period of a simple pendulum is 0.4 sec. What is its frequency of oscillation?

Discussion

8789.	Given that both liquid A and liquid B exert the same amount of pressure, what would be the height of column of liquid A if the density of liquid A is twice the density of liquid B and the height of column of liquid B is 10 cm?
Answer» Given that both liquid A and liquid B exert the same amount of pressure, what would be the height of column of liquid A if the density of liquid A is twice the density of liquid B and the height of column of liquid B is 10 cm?

Discussion

8790.	The closed and continuous path of electric current is known as ______.
Answer» The closed and continuous path of electric current is known as ______.

Discussion

8791.	Explain why the tip of a sewing needle is sharp
Answer» Explain why the tip of a sewing needle is sharp

Discussion

8792.	Why Sirius is a brightest star in sky ?
Answer» Why Sirius is a brightest star in sky ?

Discussion

8793.	Find out how friction heat up food in microwave ovens?
Answer» Find out how friction heat up food in microwave ovens?

Discussion

8794.	What is the difference between an asteroid and a comet?
Answer» What is the difference between an asteroid and a comet?

Discussion

8795.	A body of dimensions 2m×3m×4m is acted upon by a force of 50N on the top surface (2m×3m). The pressure due to the force on that surface is
Answer» A body of dimensions $2 m \times 3 m \times 4 m$ is acted upon by a force of 50N on the top surface $(2 m \times 3 m)$ . The pressure due to the force on that surface is

Discussion

8796.	What would be the phases of Mary's moons ? Do they are like are moon.
Answer» What would be the phases of Mary's moons ? Do they are like are moon.

Discussion

8797.	If u =3 v then u and v vary __________ with each other. Also mention the reason why you chose the answer?
Answer» If u =3 v then u and v vary __________ with each other. Also mention the reason why you chose the answer?

Discussion

8798.	What will happen if we run two same materials against each other? Will they acquire a charge?Why/Why not?
Answer» What will happen if we run two same materials against each other? Will they acquire a charge?Why/Why not?

Discussion

8799.	what is distance between the sun and the earth
Answer» what is distance between the sun and the earth

Discussion

8800.	Why emergent ray is parallel to incident ray only in rectangular glass slab, Why not in triangular glass prism?
Answer» Why emergent ray is parallel to incident ray only in rectangular glass slab, Why not in triangular glass prism?

Discussion

Explore topic-wise InterviewSolutions in .

What the difference between energy produced during a nuclear fussion and fission?

Difference between vapour and gas

If earth is having gravitational force,and satellites are out of earths atmosphere then why satellites are steady there?why moons gravitational force not attracting them towards it.

A train travels at 82.6km/h.How many meters in 15 minutes

Why does light changes it speed in every medium

Which is optically denser : water or air ? Give reason.

The diagram (Fig. 5.41) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.

State one way to decrease the moment of a given force about a given axis of rotation

A tightly closed container contains 500 ml of gas. Now, the gas is carefully transported into a 1000 ml container without any leakage. What is the volume of gas in the new container?

When the live wire and the fuse wire come in contact with each other in a circuit, it causes a/an _________.

Sound waves can travel in which of the following?

When a 0.5 kW heater operates for 20 minutes, the electrical energy consumed is equal to ___ kJ.

Find the volume of a wooden cube whose side is 12 cm long and has a mass of 3.5 kg.

The volume of 50 g of a substance is 20cm3. If the density of water is 1 gcm−3, will the substance float or sink?

How can we know that a object is chaerged positively or negatively ??

If the plates of a capacitor are oppositely charged, then what is the total charge?

Harish ran a certain distance faster than Suresh. Which fundamental physical quantity/quantities is/are measured for comparing their speeds?

Write the full form of LED.

Which parts wear away first in shoes ? Give a reason for your answer.

What is Emergent ray?

A machine has a velocity ratio of 4. It is used to raise a load of 400N by 4m using an effort 20kgf. Find the work done on the machine. Take g = 10 m/s2​.

In which direction does the buoyant force acts?

How is pressure related to force and area

HOW DOES ATMOSPHERIC PRESSURE HELP US ?

Why does not produce sound when it osscilates?

A thin layer of some metal like zinc is deposited on an object to ___________.

Which celestial bodies help scientist in investigating the nature of the material from which the solar system was formed

State true or false also correct the false statements. 1. Hot water discharge into rivers from factories is also a pollutant. 2. Aluminium does not react with water. 3. Only the earth exerts gravitational force on all objects. 4. Plant cells have large vacuoles as compared to animal cells.

Sun in orange colour but rainbow is caused by dispersion so the white light produced from sun should be in white and the sun also should be in white colour

Why is nuclear fission highly exothermic(energy)?

Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by : (a) a concave mirror, and (b) a convex mirror.

A car accelerates from rest to 100 m/s in 10 seconds. If mass of the car is 50 kg then power developed by the engine is: (Select all that apply)

An image which can be obtained on a screen is known as a _____.

What type of mirror is used in the headlights of a car?

The word "Fusion" is meant for___.

The time period of a simple pendulum is 0.4 sec. What is its frequency of oscillation?

Given that both liquid A and liquid B exert the same amount of pressure, what would be the height of column of liquid A if the density of liquid A is twice the density of liquid B and the height of column of liquid B is 10 cm?

The closed and continuous path of electric current is known as ______.

Explain why the tip of a sewing needle is sharp

Why Sirius is a brightest star in sky ? ​​​​​

Find out how friction heat up food in microwave ovens?

What is the difference between an asteroid and a comet?

A body of dimensions 2m×3m×4m is acted upon by a force of 50N on the top surface (2m×3m). The pressure due to the force on that surface is

What would be the phases of Mary's moons ? Do they are like are moon.

If u =3 v then u and v vary __________ with each other. Also mention the reason why you chose the answer?

What will happen if we run two same materials against each other? Will they acquire a charge?Why/Why not?

what is distance between the sun and the earth

Why emergent ray is parallel to incident ray only in rectangular glass slab, Why not in triangular glass prism?

A machine has a velocity ratio of 4. It is used to raise a load of 400N by 4m using an effort 20kgf. Find the work done on the machine. Take g = 10 m/s2.

Why Sirius is a brightest star in sky ?