OR2007

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…

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…

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…

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.…

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,…

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…

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…

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…

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…

Photorespiration is seen in

Photorespiration is seen in Options (a) chloroplast, peroxisome and ribosome (b) photosynthetic cell (c) non photosynthetic cell (d) peroxisome and…