Physics-
General
Easy
Question
A balloon filled with air is weighted, so that it barely floats in water as shown in figure. When it is pushed down so that it gets submerged a short distance in water, then the balloon :–
- Will come up again to its former position
- Will remain in the position it is left
- Will sink to the bottom
- Will emerge out of liquid
The correct answer is: Will sink to the bottom
Related Questions to study
physics-
A capillary of the shape as shown is dipped in a liquid. Contact angle between the liquid and the capillary is 0° and effect to liquid inside the meniscus is to be neglected. T is surface tension of the liquid, r is radius of the meniscus, g is acceleration due to gravity and r is density of the liquid then height h in equilibrium is:
A capillary of the shape as shown is dipped in a liquid. Contact angle between the liquid and the capillary is 0° and effect to liquid inside the meniscus is to be neglected. T is surface tension of the liquid, r is radius of the meniscus, g is acceleration due to gravity and r is density of the liquid then height h in equilibrium is:
physics-General
physics-
The spring balance A read 2 kg with a block m suspended from it. A balance B reads 5 kg when a beaker with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid in the beaker as shown in figure. In this situation :–
The spring balance A read 2 kg with a block m suspended from it. A balance B reads 5 kg when a beaker with liquid is put on the pan of the balance. The two balances are now so arranged that the hanging mass is inside the liquid in the beaker as shown in figure. In this situation :–
physics-General
physics-
A block of mass 'M' area of cross–section 'A' & length 
is placed on smooth horizontal floor. A force 'F' is applied on the block as shown. If Y is young modulus of material , then total extension in the block will be:
A block of mass 'M' area of cross–section 'A' & length is placed on smooth horizontal floor. A force 'F' is applied on the block as shown. If Y is young modulus of material , then total extension in the block will be:
physics-General
physics-
A steel rod of cross–sectional area 16 
and two brass rods of cross section area 10 together support a load of 5000 kg as shown in figure. The stress in steel rod will be : (Take Y for steel = 
N/ and for brass = 
N/ )
A steel rod of cross–sectional area 16 and two brass rods of cross section area 10 together support a load of 5000 kg as shown in figure. The stress in steel rod will be : (Take Y for steel = N/ and for brass = N/ )
physics-General
physics-
The figure shows a soap film in which a closed elastic thread is lying. The film inside the thread is pricked. Now the sliding wire is moved out so that the surface area increases. The radius of the circle formed by elastic thread will :
The figure shows a soap film in which a closed elastic thread is lying. The film inside the thread is pricked. Now the sliding wire is moved out so that the surface area increases. The radius of the circle formed by elastic thread will :
physics-General
physics-
In determination of young modulus of elasticity of wire, a force is applied and extension is recorded. Initial length of wire is '1m'. The curve between extension and stress is depicted then Young modulus of wire will be:
In determination of young modulus of elasticity of wire, a force is applied and extension is recorded. Initial length of wire is '1m'. The curve between extension and stress is depicted then Young modulus of wire will be:
physics-General
physics-
A copper wire of length 3m and area of cross–section 1 
, passes through an arrangement of two frictionless pulleys, 
and 
. One end of the wire is rigidly clamped, and a mass of 1 kg is hanged from the other end. If the Young's modulus for copper is 
, then the elongation in the wire is
A copper wire of length 3m and area of cross–section 1 , passes through an arrangement of two frictionless pulleys, and . One end of the wire is rigidly clamped, and a mass of 1 kg is hanged from the other end. If the Young's modulus for copper is , then the elongation in the wire is
physics-General
chemistry-
Which nitrogen is protonated readily in guanidine
Which nitrogen is protonated readily in guanidine
chemistry-General
chemistry-
Consider the following sequence of reactions 
The major product (B) is-
Consider the following sequence of reactions
The major product (B) is-
chemistry-General
chemistry-
The possible product formed in the reaction
The possible product formed in the reaction
chemistry-General
chemistry-
The end product (B) formed in the reaction
The end product (B) formed in the reaction
chemistry-General
chemistry-
The major product formed in the reaction is –
The major product formed in the reaction is –
chemistry-General
chemistry-
The end product (B) formed in the reaction 
is -
The end product (B) formed in the reaction is -
chemistry-General
chemistry-
The IUPAC name of the following compound is –
The IUPAC name of the following compound is –
chemistry-General
chemistry-
The functional groups of (B) and (C) respectively are-
The functional groups of (B) and (C) respectively are-
chemistry-General
