Answer:
Explanation:
Let the potential difference between the plate is V . Then in the first case
Electric field E between plate
E₁ = V / d
where d is separation between plate
When the plate separation becomes d / 2
Electric field E between plate
E₂ = V / d /2
= 2 V / d =2E₁
Or twice the earlier field
Answer:d
Explanation:
Suppose V is the voltage of battery and R is the resistance of bulb
so Power drop for initial stage

When another identical bulb of same resistance is applied in parallel so voltage Drop across both the resistor will be same i.e. V
so Power consumed 
so there is no change in power and hence no dip in brightness
Answer:
41
Explanation:
you subtract the initial velocity which is 10m/s from the final velocity which is 51m/s
i think the options maybe will be between c and d
but then again if it is super hot or super cold maybe bacteria wont grow but then im sry im not really sure about the answer. hope this helps