Browse and search thousands of solved questions for your preparation.
Free questions with full explanations — locked behind signup to protect quality.
A p-n photodiode is fabricated from a semiconductor with a band gap of $2.5 \text{ eV}$. It can detect a signal of wavelength:
When a liquid boils, there is [JIPMER 2002]:
The exploitation of bioresources of a nation by multinational companies without authorization from the concerned country is referred to as:
Which one of the following statements is false?
If the lattice parameter for a crystalline structure is $3.6\text{ \AA}$, then the atomic radius in fcc crystal is:
For which one of the following, Bohr model is not valid ?
If in a p-n junction, a square input signal of $10 \text{ V}$ is applied as shown, then the output across $R_L$ will be:
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity $4 \text{ m s}^{-1}$. The ball strikes the water surface after $4 \text{ s}$. The height of bridge above water surface is (Take $g = 10 \text{ m s}^{-2}$)
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?
A transistor is operated in a common emitter configuration at $V_c = 2 \text{ V}$ such that a change in the base current from $100 \text{ } \mu\text{A}$ to $300 \text{ } \mu\text{A}$ produces a change in the collector current from $10 \text{ mA}$ to $20 \text{ mA}$. The current gain is:
Nissl bodies are mainly composed of
AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?
Which of the following is an occupational respiratory disorder?
Match the items given in Column I with those in Column II and select the correct option given below : Column-I a. Eutrophication b. Sanitary landfill c. Snow blindness d. Jhum cultivation Column-II i. UV-B radiation ii. Deforestation iii. Nutrient enrichment iv. Waste disposal
Which of the following gastric cells indirectly help in erythropoiesis?
As the temperature increases, the electrical resistance:
Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is:
Which of the following is not an autoimmune disease?
There are four light-weight-rod samples A, B, C, D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted: (i) A is feebly repelled (ii) B is feebly attracted (iii) C is strongly attracted (iv) D remains unaffected Which one of the following is true?