1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A small hole of area of cross-section 2 mm2 present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 m/s2, the rate of flow of water through the open hole would be nearly :
A
8.9 × 10–6 m3/s
B
2.23 × 10–6 m3/s
C
6.4 × 10–6 m3/s
D
12.6 × 10–6 m3/s
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Two parallel infinite line charges with linear charge densities +$$\lambda $$ C/m and -$$\lambda $$ C/m are placed at a distance of 2R in free space. What is the electric field mid-way between the two line charges?
A
$${{2\lambda } \over {\pi {\varepsilon _0}R}}$$ N/C
B
zero
C
$${\lambda \over {\pi {\varepsilon _0}R}}$$ N/C
D
$${\lambda \over {2\pi {\varepsilon _0}R}}$$ N/C
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A body weight 200 N on the surface of earth. How much will it weight half way down to the centre of the earth?
A
200 N
B
250 N
C
100 N
D
150 N
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction?
A
equal to angle of incidence
B
90o
C
180o
D
0o