1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

A bullet is fired from a gun at the speed of $$280 \mathrm{~ms}^{-1}$$ in the direction $$30^{\circ}$$ above the horizontal. The maximum height attained by the bullet is

$$\left(g=9.8 \mathrm{~ms}^{-2}, \sin 30^{\circ}=0.5\right)$$:-

A
2000 m
B
1000 m
C
3000 m
D
2800 m
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

An electric dipole is placed at an angle of $$30^{\circ}$$ with an electric field of intensity $$2 \times 10^{5} \mathrm{NC}^{-1}$$. It experiences a torque equal to $$4 ~\mathrm{N~m}$$. Calculate the magnitude of charge on the dipole, if the dipole length is $$2 \mathrm{~cm}$$.

A
6 mC
B
4 mC
C
2 mC
D
8 mC
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement I : Photovoltaic devices can convert optical radiation into electricity.

Statement II : Zener diode is designed to operate under reverse bias in breakdown region.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are incorrect.
B
Statement I is correct but Statement II is incorrect.
C
Statement I is incorrect but Statement II is correct.
D
Both Statement I and Statement II are correct
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are :

A
Personal errors
B
Least count errors
C
Random errors
D
Instrumental errors
EXAM MAP