Physics-
General
Easy
Question
Assertion : Speed of wave = Wave length / Time period
Reason : Wave length is the distance between two nearest particles in phase
- If both assertion and reason are true and the reason is the correct explanation of the assertion
- If both assertion and reason are true but reason is not the correct explanation of the assertion
- If assertion is true but reason is false
- If the assertion and reason both are false
The correct answer is: If both assertion and reason are true but reason is not the correct explanation of the assertion
Related Questions to study
Physics-
Assertion : When we start filling an empty bucket with water, the pitch of sound produced goes on decreasing
Reason : The frequency of man voice is usually higher than that of woman
Assertion : When we start filling an empty bucket with water, the pitch of sound produced goes on decreasing
Reason : The frequency of man voice is usually higher than that of woman
Physics-General
Physics-
Decibel is unit of
Decibel is unit of
Physics-General
Physics-
A bar magnet of magnetic moment 3.0 A-m2 is placed in a uniform magnetic induction field of 2 × 10–5 T. If each pole of the magnet experiences a force of 6 x 10–4 N, the length of the magnet is
A bar magnet of magnetic moment 3.0 A-m2 is placed in a uniform magnetic induction field of 2 × 10–5 T. If each pole of the magnet experiences a force of 6 x 10–4 N, the length of the magnet is
Physics-General
Physics-
If a bar magnet of magnetic moment M is freely suspended in a uniform magnetic field of strength B, the work done in rotating the magnet through an angle 
is
If a bar magnet of magnetic moment M is freely suspended in a uniform magnetic field of strength B, the work done in rotating the magnet through an angle is
Physics-General
Physics-
A very small magnet is placed in the magnetic meridian with its south pole pointing north. The null point is obtained 20 cm away from the centre of the magnet. If the earth’s magnetic field (horizontal component) at this point be 0.3 gauss, the magnetic moment of the magnet is
A very small magnet is placed in the magnetic meridian with its south pole pointing north. The null point is obtained 20 cm away from the centre of the magnet. If the earth’s magnetic field (horizontal component) at this point be 0.3 gauss, the magnetic moment of the magnet is
Physics-General
Physics-
The figure below shows the north and south poles of a permanent magnet in which n turn coil of area of cross-section A is resting, such that for a current i passed through the coil, the plane of the coil makes an angle q with respect to the direction of magnetic field B. If the plane of the magnetic field and the coil are horizontal and vertical respectively, the torque on the coil will be
The figure below shows the north and south poles of a permanent magnet in which n turn coil of area of cross-section A is resting, such that for a current i passed through the coil, the plane of the coil makes an angle q with respect to the direction of magnetic field B. If the plane of the magnetic field and the coil are horizontal and vertical respectively, the torque on the coil will be
Physics-General
Physics-
Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given by
Magnetic intensity for an axial point due to a short bar magnet of magnetic moment M is given by
Physics-General
Chemistry-
60% of a first order reaction was completed in 60 min. The time taken for reactants to decompose to half of their original amount will be
60% of a first order reaction was completed in 60 min. The time taken for reactants to decompose to half of their original amount will be
Chemistry-General
Chemistry-
For a hypothetical reaction: 
Products, the rate law is 
. The order of reaction is
For a hypothetical reaction: Products, the rate law is . The order of reaction is
Chemistry-General
Chemistry-
For the chemical reaction 
, the rate of the reaction is doubled when the concentration of B was doubled, and when the concentration, of both A and B was doubled rate become doubled and when the concentration of both B and C was doubled rate become quadrupled. What is the order with respect to A, B, and C and the total order?
For the chemical reaction , the rate of the reaction is doubled when the concentration of B was doubled, and when the concentration, of both A and B was doubled rate become doubled and when the concentration of both B and C was doubled rate become quadrupled. What is the order with respect to A, B, and C and the total order?
Chemistry-General
Chemistry-
In a multistep reaction such as 
,
for the reaction 
which statement is true?
In a multistep reaction such as , for the reaction which statement is true?
Chemistry-General
Chemistry-
The efficiency of an enzyme in catalyzing a reaction is due to its capacity
The efficiency of an enzyme in catalyzing a reaction is due to its capacity
Chemistry-General
Chemistry-
The activation energy for the forward reaction 
is 
and 
is 
. The activation energy for the reverse reaction is
The activation energy for the forward reaction is and is . The activation energy for the reverse reaction is
Chemistry-General
Chemistry-
For the reaction 
, doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law for the reaction is
For the reaction , doubling the concentration of both the reactants increases the reaction rate by 8 times and doubling the initial concentration of only B simply doubles the reaction rate. The rate law for the reaction is
Chemistry-General
Chemistry-
The free energy change due to a reaction is zero when
The free energy change due to a reaction is zero when
Chemistry-General
