then
Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and v2, then
29
Nov
Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and v2, then then Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and [...]
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then :
29
Nov
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then : A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. [...]
The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T, then
28
Nov
The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T, then The activity of a sample of radioactive material is A1 at time t1 and A2 at time t2(t2 > t1). If its mean life is T then November [...]
If K1 and K2 are the maximum kinetic energies of the photoelectrons emitted, when light of wavelengths λ1 and λ2 respectively are incident on a metallic surface. If λ1=3λ2, then:
28
Nov
If K1 and K2 are the maximum kinetic energies of the photoelectrons emitted, when light of wavelengths λ1 and λ2 respectively are incident on a metallic surface. If λ1=3λ2, then: If K1 and K2 are the maximum kinetic energies of the photoelectrons emitted then when light of wavelengths λ1 and λ2 respectively are incident on [...]
A solid sphere, disc and solid cylinder all of the same mass are allowed to roll down (from rest) on an inclined plane, then
27
Nov
A solid sphere, disc and solid cylinder all of the same mass are allowed to roll down (from rest) on an inclined plane, then A solid sphere disc and solid cylinder all of the same mass are allowed to roll down (from rest) on an inclined plane then November 27, 2020 Category: Cengage NEET by [...]
wo bodies with moments of inertia I1 and I2 (I1>I2) have equal angular momenta. If their kinetic energies of rotation are E1 and E2 respectively, then.
27
Nov
wo bodies with moments of inertia I1 and I2 (I1>I2) have equal angular momenta. If their kinetic energies of rotation are E1 and E2 respectively, then. then wo bodies with moments of inertia I1 and I2 (I1>I2) have equal angular momenta. If their kinetic energies of rotation are E1 and E2 respectively November 27, 2020 [...]
A particle is moving in a vertical circle. The tensions in the string when passing through two positions at angle 30^o and 60^o from vertical (lowest position) are T1 and T2 respectively, then
27
Nov
A particle is moving in a vertical circle. The tensions in the string when passing through two positions at angle 30^o and 60^o from vertical (lowest position) are T1 and T2 respectively, then A particle is moving in a vertical circle. The tensions in the string when passing through two positions at angle 30^o and [...]
As shown in fig, if acceleration of M with respect to ground is 2ms−2 , then
27
Nov
As shown in fig, if acceleration of M with respect to ground is 2ms−2 , then as shown in fig. if acceleration of M with respect to ground is 2ms−2 then November 27, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 5 - Newton's Laws of Motion (Without Friction) , Chapter 6 [...]
Two identical balls 1 and 2 are tied to two strings as shown in figure. They are rotated about point O. Ball 1 is observed from ball 2, centrifugal force on ball 1 is F1,ball 2 is observed from ball 1 and centrifugal force on ball 2 is F2, then
26
Nov
Two identical balls 1 and 2 are tied to two strings as shown in figure. They are rotated about point O. Ball 1 is observed from ball 2, centrifugal force on ball 1 is F1,ball 2 is observed from ball 1 and centrifugal force on ball 2 is F2, then ball 2 is observed from [...]
If P (A) denotes the probability of an event A, then
26
Nov
If P (A) denotes the probability of an event A, then If P (A) denotes the probability of an event A then November 26, 2020 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 10 ,