An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed that two successive nodes are formed at distances 16 cm and 46 cm from the open end. The speed of […]
The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t² metre. The angle of projection is
Options
(a) sin⁻¹ (4/5) (b) sin⁻¹ (3/5) (c) sin⁻¹ (4/3) (d) sin⁻¹ (3/4)
A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted into a 10 A ammeter, the shunt resistance is
Options
(a) […]
Minimum and maximum values of Poisson’s ratio for a metal lies between
Options
(a) (-∞ to +∞) (b) 0 to 1 (c) (-∞ to 1) (d) 0 to 0.5
Correct Answer:
0 to […]
Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?
Options
(a) The faster one (b) Depends on their mass (c) The slower […]
Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear momenta is
Options
(a) 1:2 (b) 1:1 (c) 4:1 (d) 1:4
Correct Answer:
1:2
Explanation: […]
A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point
Options
(a) The momentum changes by mv (b) The momentum changes by 2mv […]
Which colourless gas evolves, when NH₄ Cl reacts with zinc in a dry cell battery
Options
(a) NH₃ (b) N₂ (c) H₂ (d) Cl₂
Correct Answer:
H₂
Explanation:
No explanation available. Be the […]
When aniline is treated with sodium nitrite and hydrochloric acid at 0⁰C, it gives
Options
(a) phenol and N₂ (b) diazonium salt (c) hydrazo compound (d) no reaction takes place
Correct Answer:
diazonium […]
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