Answer:
0.145 m
Explanation:
Data provided in the question:
wavelength of red light, λred = 656 nm = 656 × 10⁻⁹ m
wavelength of blue light, λblue = 486 nm = 486 × 10⁻⁹ m
line density = 500 per mm
length, L = 1.3 m
d = 1 mm / 500 lines
= 0.002 mm = 0.002 × 10⁻⁶ m
m = 1 [for the first order bright fringe]
Now,
The positions can be determined by using the formula
θ =
& y = Ltan(θ)
thus,
θred =
= 19.15°
yred = Ltan(θred)
= (1.5) × tan(19.15°)
= 0.521 m
similarly,
θblue =
= 14.1°
yblue = Ltan(θblue)
= 1.3 × tan(14.1°)
= 0.376 m
Hence,
distance between the first-order red and blue fringes
= 0.521 m - 0.376 m
= 0.145 m
When gases, fluids, or other solids are in contact with a moving object
heat is produced due to friction.
Answer:
b
Explanation:
he keep the thermoter in the water longer
<u>Answer:</u>
For 1: The correct option is Option C.
For 3: The final velocity of the opponent is 1m/s
<u>Explanation: </u>
During collision, the energy and momentum remains conserved. The equation for the conservation of momentum follows:
...(1)
where,
are the mass, initial velocity and final velocity of first object
are the mass, initial velocity and final velocity of second object
<u>For 1:</u>
We are Given:
Putting values in equation 1, we get:
Hence, the correct answer is Option C.
Impulse is defined as the product of force applied on an object and time taken by the object.
Mathematically,
where,
F = force applied on the object
t = time taken
J = impulse on that object
Impulse depends only on the force and time taken by the object and not dependent on the surface which is stopping the object.
Hence, the impulse remains the same.
Let the speed in right direction be positive and left direction be negative.
We are Given:
Putting values in equation 1, we get:
Hence, the final velocity of the opponent is 1m/s and has moved backwards to its direction of the initial velocity.
Answer:
0.208 N
Explanation:
We are given that
Distance,d=0.41 m
The magnitude of the net electrostatic force experienced by any charge at point 4
Net force,
Where