When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm
When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm, the energy increases by
Options
(a) 300 J (b) 400 J (c) 200 J (d) […]
OR2007
Ring, hollow ring and solid sphere are rolled down from inclined plane
Ring, hollow ring and solid sphere are rolled down from inclined plane. Which will take less time to reach the ground?
Options
(a) Solid Sphere (b) Hollow Sphere (c) Ring (d) Hollow Sphere […]
A bullet comes out of the barrel of gun of length 2m with a speed of 800 m/s
A bullet comes out of the barrel of gun of length 2m with a speed of 800 m/s. The average acceleration of the bullet is
Options
(a) 160 m/s² (b) 60 km/s² (c) […]
A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1m
A body rolls down a stair case of 5 steps. Each step has height 0.1 m and width 0.1 m. With what velocity will the body reach the bottom
Options
(a) 5√2 m/s […]
A transistor is working in common emitter mode. Its amplification factor is 80
A transistor is working in common emitter mode. Its amplification factor is 80. If the base current is 250 µA, what is the current at the collector?
Options
(a) 250 µA (b) 250 […]
Two pendulums A and B are oscillating simultaneously with time period
Two pendulums A and B are oscillating simultaneously with time period T and 5T/4 respectively. What is the phase difference between them after B completes one oscillation?
Options
(a) 60° (b) 45° (c) […]
A gas is suddenly expanded such that its final volume becomes 3 times
A gas is suddenly expanded such that its final volume becomes 3 times its intial volume. If the specific heat at constant volume of the gas (Cv)=2R. Then the ratio of initial to final pressure […]
Which structure is not the characteristic of mushrooms?
Which structure is not the characteristic of mushrooms?
Options
(a) basidiospore (b) ascospores (c) dikaryotic mycelium (d) eukaryotic structure
Correct Answer:
ascospores
Explanation:
No explanation available. Be the first to write the explanation […]
Which cells on grass leaves help in minimizing cuticular transpiration?
Which cells on grass leaves help in minimizing cuticular transpiration?
Options
(a) guard cells (b) bulliform cells (c) subsidiary cells (d) endodermal cells
Correct Answer:
bulliform cells
Explanation:
No explanation available. Be the […]
Photorespiration is seen in
Photorespiration is seen in
Options
(a) chloroplast, peroxisome and ribosome (b) photosynthetic cell (c) non photosynthetic cell (d) peroxisome and ribosome
Correct Answer:
photosynthetic cell
Explanation:
No explanation available. Be the first to […]