A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs with deceleration.…
8 years ago
Questions
A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when
A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when it returns to the ground will…
8 years ago
The angular momentum of an electron is J. The magnitude of the magnetic moment
The angular momentum of an electron is J. The magnitude of the magnetic moment will be Options (a) eJ /…
8 years ago
If rope of lift breaks suddenly, the tension exerted by the surface of the lift
If rope of lift breaks suddenly, the tension exerted by the surface of the lift (a = Acceleration of lift)…
8 years ago
A body revolved around the sun 27 times faster than the earth. What is the ratio
A body revolved around the sun 27 times faster than the earth. What is the ratio of their radii? Options…
8 years ago
A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C
A sample of HCl gas is placed in an electric field of 5 x 10⁴ N/C. The dipole moment of…
8 years ago
When npn transistor is used as an amplifier
When npn transistor is used as an amplifier Options (a) electrons move from base to collector (b) holes move from…
8 years ago
The frequencies of X-rays,γ-rays and ultraviolet rays are respectively p,q and r
The frequencies of X-rays,γ-rays and ultraviolet rays are respectively p,q and r, then Options (a) p greater than q,q greater…
8 years ago
The magnetic flux linked with a coil at any instant t is given by ?, find emf
The magnetic flux linked with a coil at any instant t is given by ?= (5t³ - 100t + 300).…
8 years ago
The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength
The shortest wavelength in Lyman series is 91.2 nm. The largest wavelength of the series is Options (a) 121.6 nm…
8 years ago