\(\frac{mv}{M}\)
\(\frac{Mv}{M - m}\)
\(\frac{mv}{M + m}\)
\(\frac{mv}{M - m}\)
Correct answer is D
(M - m)V2 = mv
V2 = \(\frac{mv}{M - m}\)
125m
150m
250m
15km
Correct answer is A
speed = \(\frac{90 \times 10^3}{3600}\) = 25ms-1
Acceleration = velocity change / time = 25 / 10
: Acceleration = 2.5
Using S = Ut + \(\frac{1}{2}\) at^2
S = \(\frac{1}{2}\) X 2.5 X 10^2 = 125m
Which of the following is a fundamental unit?
Newton
Watt
Joule
Second
Correct answer is D
No explanation has been provided for this answer.
Which of the following phenomena is called photoelectric effect?
high energy electrons impinge on a metalic anode which then emits photons
a high energy photon emits photons as it slowed down
a metal absorbs quanta of light and then emits electrons
Two electrons are created from a quantum of light
Correct answer is C
No explanation has been provided for this answer.
i and ii only
ii and iii only
i and iii only
i, ii, and iii only
Correct answer is A
No explanation has been provided for this answer.