A body is thrown upward from ground covers equal distances
A body is thrown upward from ground covers equal distances in 4th and 7th second. With what initial velocity the body was projected?
Options
(a) 20 m/s (b) 50 m/s (c) 30 m/s (d) 10 […]
Questions
Two balls are dropped from same height at 1 second interval of time.
Two balls are dropped from same height at 1 second interval of time. The seperation between the two balls after 3 second of the drop of the 1st ball is
Options
(a) 50 […]
Find out the angle of projection, if range is 4 times of maximum height
Find out the angle of projection, if range is 4 times of maximum height
Options
(a) 60⁰ (b) 45⁰ (c) 30⁰ (d) 75⁰
Correct Answer:
45⁰
Explanation:
R=4H 2 u² sin θ cos θ/g […]
The horizontal range of a projectile is 4√3 times the maximum height achieved
The horizontal range of a projectile is 4√3 times the maximum height achieved by it. The angle of projection is
Options
(a) 30⁰ (b) 45⁰ (c) 60⁰ (d) 90⁰
Correct Answer:
30⁰
Explanation:
u²sin […]
A thermocouple is made from two metals, antimony and bismuth. If one junction
A thermocouple is made from two metals, antimony and bismuth. If one junction on the couple is kept hot and the other is kept cold then, an electric current will
Options
(a) flow […]
In producing chlorine through electrolysis 100 watt power at 1125 V is being
In producing chlorine through electrolysis 100 watt power at 1125 V is being consumed. How much chlorine per minute is liberated? E.C.E. of chlorine is 0.367×10⁻⁶kg/coulomb
Options
(a) 13.6 mg (b) 17.6 mg […]
“On flowing current in a conducting wire the magnetic field is produced around it”.
“On flowing current in a conducting wire the magnetic field is produced around it”. It is a law given by
Options
(a) Lenz (b) Ampere (c) Ohm (d) Maxwell
Correct Answer:
Ampere
Explanation: […]
A body of mass 2 kg is moved by a force F=3x where x is the distance covered.
A body of mass 2 kg is moved by a force F=3x where x is the distance covered. Initial position is x=2 m and the final position is x=10 m. The initial speed is zero. […]
On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck is moving with acceleration 5 ms⁻². The frictional force on block will be
Options
(a) […]
For a satellite moving in an orbit around the earth, the ratio of kinetic
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is
Options
(a) (1/2) (b) 1/√2 (c) 2 (d) √2
Correct Answer:
(1/2)
Explanation:
-GMm/R² […]